Was I wrong for this?

Beep★★★™ • Uppity blacktivist ✊🏼 #BLM, & social deviant; I'll spare you the whole Megillah 😉 The Revolution will not be televised
A little background on this guy: he has no concern for black issues. Ever. He once told me to my face that if you're not white you're not a real American. Was I wrong for this response? I mean really, was I? I just felt like how dare he ask me about Dallas when he didn't give a fuck about Philando or Alton or anyfuckingbody. Why he thought I was OBLIGATED to speak to him about the subject. Really? Idk maybe I overreacted. 
Edit: the rest of our convo is in the comments