Well, similar to Avatar, the race politics of it are pretty dodgy. Both films are sort of predicated on the premise of "Here comes the strong white savior to come save the native american stand-ins/the poor uneducated black man". I think that the blind side especially bothers liberals (and I say this as a socialist, myself), because the premise really feels like someone trying to repent for a lot of white guilt. So, yeah, I'd say that the film is racist, in a passive, ignorant and benign way. I definitely don't think there's anything malicious about it, just profoundly misguided and patronizing.