”Peace Train,” a 1971 hit by Cat Stevens (now Yusuf Islam), is here the background for a montage by Lucas Gray of images from contemporary Iran, interspersed with some quotations that are intended to help Americans take a break from the barrage of anti-Iranian propaganda to which they are currently being subjected — designed, of course, to prepare them for military aggression in the name of “defense” against a nation that has not attacked another since Nader Shah invaded India in 1738....