Turkish police officers, wearing face masks for protection against coronavirus, arrest a demonstrator, during May Day protests near Taksim Square, in Istanbul, Friday, May 1, 2020. Police in Istanbul detained at least 15 people including trade union leaders who tried to stage a May Day march in defiance of a coronavirus lockdown and a ban on demonstrations at the historic square. In 1977, 34 people were killed there during a May Day event when shots were fired into the crowd from a nearby building. (AP Photo/Emrah Gurel)