You may not refer to their website
Even if you don’t want to become a member of the Hells Angels and have never been one, you can easily get in trouble with the gang without even realizing it. Outsiders are not allowed to refer to the Hells Angels website. For example, you can read on the website (which we are not allowed to refer to) that it is forbidden to place urls on other websites that link to those of the motorcycle club without permission. And even if you did get permission, a member can tell you to remove it at any time.
Image: Pexels, Andrea Piacquadio