An art group in Copenhagen decided to hold an exhibit dedicated to history’s martyrs. But alongside the likes of Joan of Arc and Socrates visitors will also find the Paris and Brussels attackers, something that got the group reported to the police. Ida Grarup Nielsen, who leads the artist collective The Other Eye of The Tiger, sees the theme of martyrs as encompassing persons on any side of history who were willing to die for their cause. The installation to take place May 26 – March 10 at Copenhagen’s Meatpacking District will be fashioned into a museum in the vein...