When immigration agents came to the farm where he worked, Jaime Alanis tried to hide. Climbing to the roof of a greenhouse, while agents rounded up and arrested dozens of his coworkers below, Mr Alanis hoped to stay out of sight.

George Retes says he was tear-gassed, pepper-sprayed and dragged from his vehicle — despite identifying himself as a U.S. citizen.

George Retes told reporters he was manhandled by federal agents who broke his car window, damaged his vehicle and sprayed him with tear gas.