Rep. Marjorie Taylor Greene, a Republican from Georgia, spent approximately 10 minutes at the rally she had called for across from the courthouse where former President Donald Trump is expected to be arraigned.
When she arrived, Greene told CNN that she was there “to be with the people that have come to peacefully protest.”
The Republican firebrand spoke on a bullhorn for a brief time before departing.
Demonstrators on both sides were observed shouting at each other and community affairs officers were trying to break them up.
While crowds remain chanting in the park, the masses have thinned out a bit.
During a Monday news conference on security preparations ahead of Trump's court appearance, New York City Mayor Eric Adams specifically mentioned Greene's plans to appear in New York.
Adams called Greene a lawmaker "known to spread misinformation and hate speech" and told her to "be on your best behavior" while in the city.
GOP Rep. George Santos from New York, who was also there, defended taking part in the pro-Trump rally.
“Say what you want, I showed up what about you? #TrumpArraignment,” Santos tweeted.
CNN's Kristina Sgueglia and Nicky Robertson contributed reporting to this post.