Lovett, who graduated from Rochester's University Preparatory Charter School for Young Men last month, had initially planned to give a speech at the ceremony, as other student valedictorians had done in the past, the Rochester Democrat and Chronicle newspaper reported. But Lovett, who said he had a few encounters with his principal over student protests, told the outlet that the principal, Joseph Munno, refused to let him deliver the speech. "Unfortunately, Jaisaan's school did not allow him to give his valedictorian speech," Warren says in the clip on her public Facebook page. "For some reason, his school — in a...