I've also been at lots of games for my local team where the crowd's started booing when things haven't been all that good (which sadly has been quite regularly the last couple of seasons), and most of the time, they get even worse then (or at least, not any better). It just adds to the problems. I agree that the crowd has the right to boo, but it doesn't mean it's a smart move, and I do loathe the b******* that do it! Of course I've been pissed off at players myself during a game, but I've never ever booed! When I'm at the stadium, I'm there to support the team, not to make it harder for them!