Transgender killer Robert Dorgan murdered his son and ex-wife and critically wounded her parents at Sunday’s horrifying massacre at a Rhode Island high school hockey game, according to a family GoFundMe. “Our family has been forever changed by the tragic events at Lynch Arena, where we lost our beloved brother Aidan and their mother Rhonda, who was also my stepmother,” wrote fundraiser organizer Amanda Wallace-Hubbard on the page. “In addition to this unimaginable loss, their grandparents are currently in critical condition, fighting for their lives,” she wrote of Rhonda’s parents, who were gravely wounded in the shooting.