Marines carried out the first known detainment in L.A. — the latest provocation in Trump’s militarized answer to immigration enforcement.

As the military presence ramped up in Los Angeles, communities are preparing for the largest protests against Trump since he took office.

As President Donald Trump hosts a military parade in Washington, protesters will gather across the region, from downtown to Santa Monica to Anaheim.

Saturday marks the first full day of Marines on duty in Los Angeles, one week after protests against Immigration and Customs Enforcement raids ignited in LA.

A federal court hearing is scheduled for Thursday challenging Trump's use of the National Guard and Marines to support immigration raids in Los Angeles. California leaders warn that the military intervention is the onset of a much broader effort by Trump to overturn norms at the heart of America's political system.

Here is a breakdown of the No Kings movement and what to know ahead of the protests: According to the website, the No Kings movement is "taking action to reject authoritarianism" with upcoming protests.

By Omar Younis, Brad Brooks, Phil Stewart and Idrees Ali LOS ANGELES (Reuters) -U.S. Marines deployed to Los Angeles made their first detention of a civilian on Friday, part of a rare use of military force to support domestic police and coming ahead of national protests over President Donald Trump's military parade in Washington.

U.S. President Donald Trump can keep his deployment of National Guard troops in Los Angeles, according to a court ruling, as protests against immigration raids look set to enter their second week in the strongest backlash since his return to power in January.