Rob Kardashian says Instagram shut down his page on Wednesday following a flurry of posts attacking his former fiancee. Kardashian then took to Twitter, accusing fellow reality star Blac Chyna of infidelity, promiscuity and drug use. Earlier in the day, he posted explicit photos of Chyna on Instagram. She responded on Snapchat with a claim that Kardashian had beaten her. The post has since been deleted. Both are top trending topics worldwide on Twitter.