Tech entrepreneur Ash Bhat dropped out of high school and college to pursue digital projects. The 20-year-old’s latest effort: combatting online bots, or Twitter accounts with no human oversight. It’s a job that’s worth a break from school, he thinks. “We have a moral responsibility to make a difference.” With his company RoBhat Labs, he and his co-founder are working to tackle the spread of fake news. He tells investigative tech reporter Kashmir Hill that stomping out bots can help unite a divided nation.