Migrants, refugees and human trafficking victims face alarming treatment in Tunisia, United Nations experts warned Monday. They said human rights violations were taking place during rescue operations at sea, as people try to cross the Mediterranean to Europe, and in transfers to border areas with neighbouring Algeria and Libya. “We have received shocking reports detailing dangerous manoeuvres when intercepting migrants, refugees and asylum seekers at sea; physical violence, including beatings, threats of use of firearms; removal of engines and fuel; and capsizing of boats,” the experts said in…