Pepe frog memes. It was originally a “sad” frog meme used by cut-me-own wrist R9k users but Hillary’s hillariously inept interns claimed that it was a dogwhistle for Nazis becase Le 4chan bad. That made 4channers mad and you don’t want underwater basketweaving forum enthusiasts to get mad at you. They then used meme magic to get Trump to win.