"Meme warfare is definitely a thing. Memes are a significant component of how far right extremists recruit young men into white supremacy. Memes provide, via their veneer of humor, a deniable way to signal in-group/out-group status and also present an entry point for new members. They are “just jokes” except when they aren’t. There are interesting parallels to other techniques used by marginalized groups to identify each other within a hostile mainstream society."