“Twitter is a sewer. It brings out the worst in humanity,” Stephens posted. “I sincerely apologize for any part I’ve played in making it worse, and to anyone I’ve ever hurt. Thanks to all of my followers, but I’m deactivating this account.” Stephen’s announcement comes after he flew off the handle on Dave Karpf, a media and public affairs professor for George Washington University who called him a “bedbug.” This appeared to be an off-hand joke about the news that the Times recently had a bedbug outbreak in their newsrooms.