Christ, so many missing the point.
It's the loud incessant booing EVERY time he goes near the ball. Not just when he gives a free or gets away with one. No other player has received this treatment for such a sustained period of time. Ever.
I guess you didnt watch Carey play....was booed for the last 200 games of his career. The difference was that he would give it back to the oppositon supporters and have some fun with it. I dont recall the CEO coming out telling the crowds to stop booing him though...