McConnell's statement recognizes that the white supremacists, KKK, and neo-nazi groups have a message, so he doesn't appear to be abridging freedom of speech.

However, unlike Trump's equivocal statements, McConnell's clearly identifies what is wrong with the content of their messages.

He also points to our responsibility as Americans to stand against hate and violence, rather than ignoring it in the hope it just goes away.  

This is the crux of the CB article -- how to carry on the American tradition of political debate that is central to a democratic society.  Right now, students don't get a lot of good examples from the daily news of how civil debate works.  They need some help to understand civil discourse can build consensus.

BTW, I thought your comment was civil.