I don't root for the criminal any more than I do than I do for Tebow. It's the typical bell curve of attitudes. You have the handful of criminals (the ones in the news), and a handful of "too-good" players. I don't like either side. I don't like the criminals because of how these individuals are used in the media to create the stigma that all players are like this. I don't like how they become the "public face" of the NFL and how they end up becoming role models. I know it's up to the parents to guide their children with who they see as role models, but when the media shows them over and over, it's hard to get their image out of your mind. I have only seen 2-3 players out of the AFC west in the news as "criminals" in the last year or two, but somehow these few players are used to represent over 200 players (53 players + god knows how many coaches and "practice squad" players).
I dislike the "too-good" players for almost the same reason. It's hard to explain why I dislike them. Yes they are good people, but they show an un-realistic opposite extreme to the criminals. I think alot of it stems from the fact that several of the people i know personally (not pro athletes) who are in the "too-good" category end up being the biggest hypocrites on the planet. They talk of leading a perfect life and scold those who don't, but then say everything is ok when they commit the same "sins" they scold others for committing. This probably isn't the best "public" example, but the one that comes to mind is Sarah Palin (who preaches abstinence while hugging her single, pregnant teenage daughter).