Agents on horseback and in armored vehicles participated in a daytime raid in the heart of Los Angeles' immigrant community.

U.S. military troops and federal immigration officers have made a brief but mighty show of force at MacArthur Park in Los Angeles

Residents were outraged after dozens of federal agents marched through MacArthur Park, in one of the city’s most immigrant-heavy neighborhoods. Homeland Security officials said it was an immigration enforcement operation.