Does government surveillance make us safer? The thirteenth Munk Debate, held in Toronto on Friday, May 2, 2014, pitted Michael Hayden and Alan Dershowitz against Glenn Greenwald and Alexis Ohanian to debate whether state surveillance is a legitimate defense of our freedom. In a risk-filled world, democracies are increasingly turning to large-scale state surveillance, at home and abroad, to fight complex and unconventional threats -- but is it justified?...