National Guard troops arrived in downtown Los Angeles on Sunday after being ordered into the city by President Trump in response to a weekend of violent clashes between law enforcement officers and protesters triggered by immigration enforcement operations in the area on Friday.

President Trump ordered hundreds of National Guard troops to the city of Los Angeles, even though California's governor (who normally controls the soldiers) didn't want them on the streets. This is the first time a president has done that without a governor's approval since 1965.