Dozens of federal officers in tactical gear roamed a mostly empty park in a Los Angeles neighborhood with a large immigrant population for about an hour before clearing out.

President Donald Trump has federalized the National Guard and dispatched Marines to the city to respond to protests of ICE immigration raids. The ICE agents, many of whom are masked, have been spotted throughout the region, arresting about 2,000 immigrants since June 6, according to internal documents reviewed by The New York Times.