The arrest of a California union leader in the Los Angeles immigration protests has sparked anger across the labor movement, with unions denouncing the Trump administration and calling for the immediate release of David Huerta.

Huerta, the president of a Service Employees International Union affiliate, was injured Friday in what his union said was a workplace raid by U.S. Immigration and Customs Enforcement agents. The union said Huerta was peacefully “exercising his First Amendment right to observe and document law enforcement activity” at the time.

He was released from the hospital the same day and detained. U.S. Attorney Bill Essayli alleged on X that Huerta had been “interfering with federal officers” by blocking their vehicle and said he would be arraigned in court Monday.

The U.

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