Well, this one's certainly pretty famous. In fact, it's probably the most famous "Punching Hitler" scene of all time. Captain America Comics #1 sold over a million copies and had the Cap decking Hitler in the face as its centerpiece. Most people were thrilled at the prospect, but the publishers did receive a lot of hate mail. Why? Were Nazis trolling Marvel? Well... no. You see, this happened a full year before the Japanese attacked Pearl Harbor. Americans couldn't be bothered with Hitler at the time. Little did they know this was the most American thing a superhero has ever done.