“Feels good, man,” was the original catchphrase of Pepe the Frog, a comic strip character that grew into an internet meme and was later co-opted by white supremacists—to the dismay of the character’s creator Matt Furie.

But Furie might now be sharing the frog’s outlook, after a team from Wilmer Cutler Pickering Hale and Dorr used copyright law to halt distribution of a controversial children’s book that reportedly pushed anti-Islamic and white nationalist viewpoints.