He already got it covered up. He did so as soon as he learned about the nazi association.
I'll say that I don't know every hate symbol out there, and I know tons of people that get tattoos without any deeper meaning than "I think it looks cool." I can believe that he genuinely didn't know what it was and got it corrected once he found out what it stood for.
https://youtu.be/XAdRX76_Udo