Police declared the protest an unlawful assembly and tried to disperse the crowd.
At one point, a smoke bomb was thrown in the direction of officers as they set up a skirmish line to try and separate the Trump supporters and counter protesters.
The Los Angeles Police Department responded with rubber bullets.
The scene began clearing around 7 p.m. with protesters on both sides heading home.
U.S. Postal Service mail controversy, slow delivery times spur protest in Venice
U.S. Postal Service mail controversy, slow delivery times spur protest in Venice