Marco Rubio actually said...
We cannot be a party that nominates someone who refuses to condemn white supremacists n the Ku Klux Klan. By the way, not only is that wrong, it makes him unelectable. How are we going to grow our party with a nominee that refuses to condemn the Ku Klux Klan? Don't tell me he doesn't know who the Ku Klux Klan is.
Context
Marco Rubio criticizes Donald Trump for not condemning white supremacists and argues that this makes Trump unelectable.
02/28/2016