Manchin: Extremist Dems and Pubs Threaten America's Future

Agreed.

Manchin's examples of extremism are also well-chosen.

This is not a six-of-one, half-dozen-of-the-other situation.

The left has radicalized and spun out of control. Thus making basically any Democrat unacceptable. 

And the alternative may end up being the new, even loonier, Trump.