It all started when this Covergirl add showed up on Twitter.
It's a well known fact that Covergirl tests on cats and many other animals. The fact that they we're using cats to promote the line set twitter users off.
And of course, there are memes.
Moral of the story is:
This post was created by a member of BuzzFeed Community, where anyone can post awesome lists and creations. Learn more or post your buzz!