Today, tattoos seem to be a big rage with the younger generation. But they do not project a professional attitude and depending on the content of the artistry they can be offensive to some. If I were stopped by an officer in short sleeves who's forearms were covered in tattoos, I would also be apprehensive about his legitimacy and attitude.
I could see that, but I think the tattoos were an after point.
By the way, who had the tattoo's? I thought everybody has tattoos. Some, they just like to show them off were everybody can see them.
They definitely make an scary (Bikers, prisoners, scum bag's) impression. It's a stigma, it will always will be. So there you have it!
My main point is, I don't think tattoos played a roll is this.