You do realize that was most likely a joke comment, right? The genocidal US Empire is awful, but the idea that some online Communist thinks you should die purely from being from the US is silly.

Buddy your country has killed tens if not over a hundred million people in the conquest of war for hegemonic power and resource control across the globe. Someone on the internet hurt your feelings when making a joke. Obviously those two things are the same. 🙄

Read Fanon