Being harassed by my boyfriend's sexual abusers family

My boyfriend was raped at a party. I found out because a random Facebook sent out a video to all of my boyfriends Facebook friends of a girl giving him a blow job while he was passed out white and pale and a guy goes and starts fucking him in his ass and my boyfriend had said ow and no going in and out of it. People recording were laughing. My boyfriend didn't even remember this. He had a mental break down when he saw the video and now most of his friends and family has seen it. We went to the police and arrests were made and now me and my boyfriend both have been receiving messages from these peoples friends and family threatening us. Calling my boyfriend a liar. It seems everyday he has a message request from someone different saying he's a liar or a faggot. The one that really destroyed him was last night the girl rapist sister or whoever messaged him saying "You really think you're good looking enough to rape? Plz. My sister did you a favor". He just started crying. And the guy rapist mother had also messaged him saying her son isn't a rapist and he's just a faggot too scared to admit it. My boyfriend was done yesterday. He deleted his Facebook. We have so many pictures and memories on his Facebook but he was done and couldn't do it anymore. So it's been deleted. I'm still getting crappy messages calling my boyfriend a liar, a faggot, and threatening me but I just block and don't tell him. He feels so embarrassed about the whole thing. He is thinking about signing up for insurance at his job for therapy but he hasn't been back to work and he's scared to go back because he's friend with several coworkers and a couple managers on Facebook... So they most definitely got sent the video..