The Trae Young vs. Knicks fans rivalry is back in full effect -- the Atlanta Hawks star jawed at a couple of New York supporters after their first matchup of the season -- telling 'em to skedaddle back to the Big Apple!!
The Knicks were in Atlanta to face the Hawks on Wednesday ... and their diehard supporters made the trip to check out the action -- making their hate for Young known throughout the contest.
But the three-time All-Star got the last laugh .