Marines and additional National Guard troops headed to Los Angeles on Tuesday, sent by President Donald Trump in response to four days of protests over immigration raids despite the strenuous objections of state and local leaders.

The protests began Friday after Immigration and Customs Enforcement agents carried out coordinated raids across Los Angeles, detaining dozens of workers at warehouses and other worksites. The arrests sparked immediate backlash, with demonstrators converging outside federal buildings, blocking freeways, and in some cases clashing with police.