this is the anti-defamation league’s hate symbol database. it’s massive and includes details about what symbols mean and where you might see them.
i’m a tattoo artist and use this all the time when i see a symbol i don’t recognize—better safe than sorry. it’s saved me from working with white supremacists a few times.
I’m glad to see the arrow cross (last one( there! It originates from Hungary and was used by the nazi party here, but it was banned after WWII. It barely shows up in guides/warnings like this and idk if they still use it but better safe than sorry.