The family of British academic Jason Arday, who was found dead at a South London address on Friday night amid a high-profile plagiarism storm, have denounced what they called years of “sustained abuse”. In an overnight statement following Arday’s death, his family said he had been “subjected to a campaign of sustained abuse for more than three years since he accepted the role of professor at Cambridge University”. Arday had himself alleged a “racially motivated” campaign against him. Speaking to reporters on Saturday, British Prime Minister Andy Burnham said “it’s a tragedy on so many levels, but particularly just for…