You should never tolerate intolerance. The nazis basic philosophy boils down to intolerance. If you let that shit continue then you end up with genocide. So fuck those nazi shit heels. And if you're sympathizing with a cartoon nazi maybe you should reevaluate your life choices.
So many ways to express yourself! And if you're ever brought to court for a statement you make, /s lawfully means you meant the opposite, while emojis never snitch 😉
But the meme exists (with a Nazi being punched) because that's exactly what a lot of right-wingers say. No way to tell whether or not it's sarcasm with just the text.