U.S. Rep. Al Green was booted from President Donald Trump’s State of the Union address Tuesday night after waving a sign reading, “Black People Aren’t Apes!” as the president made his entrance down the aisle.

The Houston Democrat stood near the front of the chamber holding the sign above his head as Trump greeted lawmakers and shook hands. Gasps and boos quickly spread across the room as members on both sides reacted to the sudden disruption.

Fellow Texan Troy Nehls appeared to exchange heated words with Green before throwing his hands up and returning to his seat. Within moments, the sergeant-at-arms moved in.