PHOENIX — Hundreds of protesters rallied before the Arizona state Capitol on Thursday, demanding that state police stop collaborating with Immigration and Customs Enforcement.

The march from the Capitol to the 4th Avenue Jail was timed to coincide with the fifth anniversary of SB 1070, the Arizona law cracking down on illegal immigration that has become emblematic of conservative-led efforts to use state power to expel the undocumented.

Carlos Garcia, director of Puente Movement, a human rights group that helped organize the protest, issued a statement in which he urged President Barack Obama to “stop collaborating with police forces that are so biased they launch an investigation into his own birth certificate.”

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