Judge backs schools that fired security guard over 'black thug' Facebook comment
Judge giving a verdict (Shutterstock)

CAMDEN — A Vineland High School security guard who called a man accused of killing a Philadelphia cop "another black thug" on her Facebook page lost a bid to head off her firing Thursday. U.S. District Court Judge Joseph Irenas turned back Mary Czaplinski's request for a preliminary injunction that would have prevented the Vineland School…