Pushing Joel Embid to the ground on a dunk...definitely a dirty play...somehow escaped a flagrant foul even though everyone thought he deserved one. JE said if that were him he would have been suspended, but LeBron gets special treatment by the league. Hard to argue. I think both of those were just last season.
The other was in the closing seconds of a phoenix (think it was a playoff game) he fully extended his arms and pushed Deandre Ayton in the back, sending him into the stands. Also flagrant worthy.
He certainly isn't Dennis Rodman or Bill Laimbeer - but he has had his share of dirty plays...and the video here is pretty clear. That was a deliberate shot to the face.