I must have missed it"
I only recently found out about it myself. It happened two years ago, I believe.
Malkin said that he was a fake conservative. A reasonable response would have been expected, but he went on Twitter and called her a "dummy", said she was "born stupid", and implied that she had some sort of shameful secret in her past. When Michelle pressed him to explain, he refused.
And he didn't say a word when his fans called her an Asian prostitute.