NBC News' Jacob Soboroff reports from Los Angeles City Hall where thousands of protesters have gathered for a 'No Kings' protest against the Trump administration and ahead of the president's Washington D.

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

In the days before protests erupted in Los Angeles, the Trump administration stepped up its efforts to detain migrants — taking into custody those who arrived for routine check-ins while also conducting workplace raids that have sent waves of fear across Southern California and beyond.

LOS ANGELES–Law enforcement continued to fire flash bangs in an effort to disperse remaining protesters and agitators near City Hall in downtown Los Angeles where unlawful assembly has been declared.

Immigration tensions dampened Gold Cup atmosphere as protesters rally outside Mexico vs. Dominican Republic match, with fans reporting a more somber mood.

The development comes a day after an appeals court temporarily blocked a judge’s order that directed President Trump to return control of the California National Guard.