Khadee Hession, a student at the school’s Boca Raton-Delray Beach campus, said she and her schoolmate, Jordana Codio, decided to wear their Black Lives Matter shirts as a form of activism after a problem unfolded during one of the school’s online classes. Hession, who was in that virtual class, said some students had changed their display names and one person changed the display name to include a racial slur.