Hillary Simpson created the Facebook group #crazymothers to co-opt the perception that the science-based world has of her and her fellow antivax mothers. Now, she’s cooked up a hashtag and social media campaign called #DearDoctor to encourage mothers to harass their child’s former pediatricians by writing letters blaming them for vaccinating and supposedly causing their children’s autism. Oh, and she does freestyle rap, too. Badly. Oh, so badly.