I know this is meant to help law enforcement identify specific gangs by their tattoos, but if you're into the meaning and symbolism of tattoos, it's fascinating.

A compelling glimpse into the little known and less understood world of Russian prison tattoos. The symbolism is deep!

Unfortunately, the explanation of the symbols is lacking but the symbols themselves are interesting. I prefered Gangs and Their Tattoo above.

The topic is sure a timely one!

Not quite academic and not pop culture either, but it does capture a certain era when tattoos were for the fringe.