POPE Francis said that migrants who risk drowning at sea "must be rescued" because doing so was "a duty of humanity" and that those who impede rescues commit "a gesture of hate". Francis, 86, spoke at an inter-religious prayer service before a monument dedicated to those lost at sea. Earlier, the city's archbishop, Cardinal Jean-Marc Aveline, an Algerian-born Frenchman, criticized politicians who block NGOs and their ships from saving drowning people. "We cannot be resigned to seeing human beings treated as bargaining chips, imprisoned and tortured in atrocious ways," Francis said. "We can no longer watch the drama of shipwrecks,…