Bloods and crips extend a good ways past just USA history and culture.

Thanks to rap music alone, I would expect anyone who grew up listening to the genre would be aware of two of the most famous gangs ever.

They arnt quiet there but it’s up there with being weirded out people don’t know the Yakuza or various other famous mafias.

Just because you don’t live in a country doesn’t make it not weird to see someone be entirely ignorant of something that was internationally famous for decades. At least on a general scale. Hand signs are a bit much to be fair.