I disagree with this. The Gronk play was fine, probably the only way to get that guy down. The Brady tackle wasn't a penalty then but it would be now and it was at best reckless. Beyond that, watching him play for the Ravens this year he makes a lot of borderline tackles. He always goes for the big hit and while he's not as bad as Ryan Clark I think he is very close to the "dirty" line more often than not.
Pollard isn't a dirty player. He's a shameless prick, but he isn't a head-hunter.
I still want his heart on a fucking platter, however.
Of course, his aggression caused him to be out of position and miss about 5 potential tackles on Aaron Hernandez last game, so it serves him right.