National Guard troops arrived Sunday morning in Los Angeles to tame violent protests over immigration enforcement in the area. The protests began Friday following three Immigration and Customs Enforcement raids in the city.

What was the trigger behind the anti-ICE Los Angeles riots? How have law enforcement officers cracked down? And how have lawmakers and government officials responded?

Friday's immigration operations which took place across Los Angeles, primarily in the Westlake District, downtown, and South L.A., led to protests over the weekend, resulting in 42 arrests. Those arrested are facing charges ranging from assault on an officer,