With the Atomic Bomb Dome as a backdrop, passers-by move past riot police near Hiroshima Peace Memorial Museum in Hiroshima, southwestern Japan, Thursday, May 26, 2016. U.S. President Barack Obama is to visit Hiroshima on Friday, May 27 after the Group of Seven summit in central Japan, becoming the first serving American president to do so. (AP Photo/Shuji Kajiyama)
With the Atomic Bomb Dome as a backdrop, passers-by move past riot police near Hiroshima Peace Memorial Museum in Hiroshima, southwestern Japan, Thursday, May 26, 2016. U.S. President Barack Obama is to visit Hiroshima on Friday, May 27 after the Group of Seven summit in central Japan, becoming the first serving American president to do so. (AP Photo/Shuji Kajiyama) Credit: ap photograph