California will face off with Washington in court on Thursday over President Donald Trump's deployment of U.S. troops in Los Angeles after demonstrators again took to the streets in major cities to protest Trump's immigration crackdown.

Police and elected officials say the troops and Marines sent by the Trump administration are not properly trained to interact with civilians. A judge will decide whether to limit their duties.

Did President Trump send the U.S. military to Los Angeles earlier this week to safeguard the city from protesters? Or is this the start of something bigger — an unprecedented push by the president to carry out mass deportations with the help of armed troops?