04/24/2015 05:55 pm ET Updated Jun 03, 2015

Tweet Your Heart Out

Perkins ends his rant with: "This is a very dangerous drift in our American thinking. Kristallnacht was unthinkable in 1930; is its descendent 'progressive' radicalism unthinkable now?"

More people took to Twitter to express their outrage, including Kleiner Perkins:

The Wall Street Journal did not immediately respond to The Huffington Post's request for comment.