Manhattan Borough President Mark Levine said the city must remove the names of Nazi collaborators Henri Philippe Pétain and Pierre Laval from the Canyon of Heroes — almost 100 years after they were honored with a ticker-tape parade. “There are difficult calls here on the Canyon of Heroes and the question of reconsidering modern monuments in general, but all of us should agree that Nazi collaborators are simply beyond the pale,” Levine, who is Jewish, told The Post. Pétain and Laval fell into international disgrace after they collaborated with the Third Reich in sending thousands of Jews to their deaths...