When immigration agents pulled up outside a Los Angeles car wash on a quiet Sunday afternoon, it sparked instant chaos. Some customers at the Westchester Hand Wash, which sits in the centre of a busy shopping area just blocks from the city's airport, froze as the officers in olive-green uniforms approached, CCTV footage obtained by the BBC shows. Two employees who spotted them ducked behind a luxury SUV they were wiping down with a rag. Another worker halfway through cleaning the back window of a car looked up. Then all at once they scattered and ran, some jumping over a...