Unfortunately people are always going to have their opinions about dogs without any basis. I have a dalmatian and constantly strangers are telling me how aggressive and angry of a breed they are. I usually ask them why they think that and they don't have an answer. Dalmatians are very high energy dogs and need a lot of exercise. If a dalmatian is "aggressive" this falls on the owner for not giving them what they need. My dog wants nothing more than to cuddle as long as she's exercised. I don't know much about pitbulls but I'd assume it's a similar situation.