Yes, he may have problems with the law, I don't know which country you're from but at least in some I know it's forbidden to tattoo the swastika and other Nazi symbols.
Many people have a "Yehuborim" view of real Nazism, they think it's an affront to other races or a symbol of supremacy.
I don't know if he's a Satanist, but I don't think a Satanist would tattoo the swastika (silence is power), apart from that unfortunately, many people who have the swastika tattooed dirty it by going into schools and shooting, it's happened several times in my country, this already creates a prejudice and stereotype among people, it can cause fights