The event was one of more than 2,000 “No Kings” rallies held across the country on Saturday, protesting what organizers call “authoritarianism, billionaire-first politics, and the militarization of our democracy.

The demonstrations follow more than a week of large-scale protests in Los Angeles against Mr. Trump’s immigration crackdown and his decision to deploy the military there. Protesters gathered in Liberty Plaza outside of the Georgia State Capitol in Downtown Atlanta.

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.