That can be a healthy attitude outside of work. People love personality.
But at work, that's not a healthy attitude. You're there to work together, not to be uncompromising in expressing yourself. Your stickers are probably fine, but I can also imagine plenty of musical artists that would certainly be offensive (and rightly so) to some people, whether for their lyrics or for their criminal behavior -- and then the attitude of "that's more your problem than mine" is not gonna fly.