Tattoos are a sure sign of low class. [donning flamesuit]
If you see a Middle Eastern Jew with a tattoo they are either very tribal (from clans & tribes in remote mountains & deserts) or very secular. Same with Muslims.
If you see a white Jew with a tattoo, it appears to only mean that they are secular. But placing a Jewish tattoo on themselves at least means that they are still proud to identify themselves as Jews in public. Good thing, their Jewish soul is reaching out.
Remember riding on the Toronto subway back in the early 1960's. Two middle age ladies who looked European were sitting across from me ... both had numbered tattoos on their lower forearms.