A protester holds up a sign during a demonstration against anti-immigration legislation being debated in the U. S. Congress.

Protesters hold signs up during a demonstration against anti-immigration legislation before the U. S. Congress. One sign reads, "Humans are not Illegal."

Women hold up signs during a demonstration against anti-immigration legislation being debated in the U. S. Congress.

Protesters hold signs while the image of the crowd is reflected in the windows of Dallas City Hall. They are against anti-immigration legislation being debated in the U. S. Congress.

Protesters carry signs as the crowd is reflected in the windows behind them. They are demonstrating against anti-immigration legislation being debated before the U. S. Congress.

Protesters carry signs that read, "Humans are not Illegal" and "I Have a Dream Too." They are demonstrating against anti-immigration legislation being debated in the U. S. Congress.

The demonstration is reflected in windows of Dallas City Hall behind protesters carrying signs. They are against anti-immigration legislation being debated in the U.S. Congress.

Protesters carry signs outside Dallas City Hall during a demonstration against anti-immigration legislation being debated in the U. S. Congress.

Protesters carry signs in front of Dallas City Hall. They are against the anti-immigration legislation being debated in the U. S. Congress.

A large crowd of protesters (some holding signs and many holding American flags) gather in downtown Dallas, Texas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A large group of immigration protesters (many carrying American flags) gather in downtown Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A young boy is lifted above a crowd of immigration protesters waving American flags. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A female protester wearing a hat waves the American flag above a large crowd of protesters (who are also waving American flags) in downtown Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A young man looks at a reflection in a building's windows of a large crowd of immigration protesters in downtown Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A Dallas Police officer, standing inside a building in downtown Dallas, looks out at a large crowd of immigration protesters that are reflected in the building's windows. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

Photo of a Dallas Police officer appears to wave away a reporter(?) as the officer attempts to maintain crowd control during an large immigration march in Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. Among those marching are Hector Flores, who has served as National President of the League of United Latin American Citizens (LULAC), Director of Recruitment and Retention for the Dallas Independent School District, and an Equal Opportunity Specialist for the Office of Civil Rights within the Department of Health, Education, and Welfare; and Domingo Garcia, a practicing attorney in Dallas who served as Mayor Pro Tem of Dallas, as a Dallas City Council member, and as a Texas legislator - he is the current General Counsel for the League of United Latin American Citizens (LULAC), a Latino civil rights organization. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A female protester wearing a sombrero, blowing a red horn, and holding an American flag, waves a sign that says, "Legalizacion Va Somos De America." According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A group of immigration protesters holds up protest signs and waves American flags in downtown Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

Immigration protesters march and wave American flags as they pass Cathedral Santuario de Guadalupe (Cathedral Shrine of Our Lady of Guadalupe) in Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

Immigration protesters wave American flags as they march past Cathedral Santuario de Guadalupe (Cathedral Shrine of Our Lady of Guadalupe) in Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A large crowd of immigration protesters holds protest signs that are in English and Spanish and wave American flags. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A man gives American flags to immigration protesters in front of Cathedral Santuario de Guadalupe (Cathedral Shrine of Our Lady of Guadalupe) in Dallas. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

A man gives American flags to immigration protesters. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.

Photo of men and women immigration protesters hold American flags and signs. One woman holds a Mexican flag. According to the Dallas Police Department, at least 100,000 people marched in the most well-attended civil movement in the history of Dallas. The protesters demanded the legalization of Hispanic undocumented immigrants, estimated to be about twelve million in the United States. The so-called "mega march" was carried out to demand immigrant amnesty as members of the U.S. Congress debated immigration reform.