The hip-hop artist Yasiin Bey, formerly known as Mos Def, has cancelled his U.S. tour over legal barriers. A Boston music festival wrote on its website, “Due to immigration/legal issues, Yasiin Bey is unable to enter back into the United States.” Last year, Yasiin Bey underwent a force-feeding in a viral video to show the plight of Guantánamo hunger strikers. Bey is a U.S. citizen.