The Trump administration faces a legal challenge to its deployment of the military to protests. Tensions flared after President Trump sent troops, and protests spread to other U.S. cities.

Tens of thousands of Americans protested President Donald Trump at rallies and marches in major cities from New York to Los Angeles on Saturday, a day marred by the assassination of a Democratic lawmaker in Minnesota and conflict in the Middle East.

The demonstrations come on the heels of protests flaring up around the country over federal immigration enforcement raids that began last week and Trump ordering National Guard troops and Marines to Los Angeles where protesters blocked a freeway and set cars on fire.