WARSAW, Poland (AP) — The Auschwitz-Birkenau memorial museum has denounced a political spot by Poland’s ruling party that uses the theme of the Nazi German extermination camp to discourage participation in an upcoming anti-government march. The state-run museum attacked “instrumentalization of the tragedy” of the 1.1 million people who were murdered at the site during World War II, arguing that it is an insult to their memory. “It is a sad, painful and unacceptable manifestation of the moral and intellectual corruption of the public debate,” the state museum said. The 14-second video published Wednesday by the Law and Justice party...