If I just saw the image, I wouldn't have know that it was an SS symbol. I know they had a skull symbol, but not the specific one, and there are tons of skull symbols. And as much as I think people should do research before getting a tattoo, I know that frequently doesn't happen. But like, even without the people saying that he knows what it is, if he's had it for twenty years I find it hard to believe he wouldn't have learned about it during that time. And with the people saying that he knew, that just stacks on top.