EECS junior Rohan Phadte and fellow student Ash Bhat launched their Chrome browser extension, Botcheck.me, on Halloween and it is already proving invaluable. The app determines whether news posts on Twitter likely came from real people or were generated by a bot. When an armed gunman attacked the congregants of a Texas church this weekend, all legitmate news accounts agreed that neither race nor religion appeared to play a role. But a barrage of bots immediately started spreading rumors that the shooter had recently converted to Islam or was a member of Antifa. According to a simple random sample of 1,500 political propaganda Twitter bots the students posted on their site, #texaschurchmassacre was the bot world’s third favorite hashtag on Monday, after #maga and #antifa.