I don't quite get the hate for the Heat's "Big 2 and a half". It's not like they murdered somebody.
Slam, in the greater scheme of things, you are right.
However, this is the world of sports, where much emotion happens on a visceral level. Tribal loyalties rule the day and slights and indiscretions get magnified.
To answer your question:
1.The Decision,
2. the pretentious behavior at the Miami press conference anointing the new "big three" and predictions of the number of championships (haven't seen one yet),
3. "I don't foul out of games!",
4. ripping out Rondo's elbow intentionally to take him and us out of that series,
5. breaking Kobe's nose in an ALL-STAR GAME?!?!
6. hitting a Pacer (I forget who) from the side and knocking him down like an NFL cornerback, and not getting tossed for it,
7. etc., etc, etc,