COLLEGE PARK, Md. — An internet troll who harassed a black college student with racist messages on social media has agreed to a court settlement requiring him to get “anti-hate training,” apologize in writing and on video and publicly renounce white supremacy. Tuesday’s settlement agreement would resolve Taylor Dumpson’s claims against one of the defendants she sued in April over an online harassment campaign orchestrated by a neo-Nazi website publisher. Her lawsuit says The Daily Stormer publisher Andrew Anglin directed his site’s readers to cyberbully her after she became the first black woman to serve as American University’s student government president. Dumpson sued Anglin and two people who harassed her online.