Why shoot the Asian dude??

I wondered the same, but she was out of her mind she probably just felt disgusted and that was enough, she was killing all those men at the party and she didn't know if they were real @ssh0les and cheaters, she was assuming. She was raped and every man she met during the movie was awful, she hates them all.

This happens almost an hour into the movie. I think we're meant to ask just that. She's getting carried away at this point.