Nobody does vitriolic sectarianism like the left.

This. I told my friends before the primaries in the last presidential election that Trump would be our next president, and they said he was a joke. I said that Sanders didn't have the broad-base support or establishment friends Clinton did, so he couldn't beat her. That being the case, she would be the Dem candidate, and the right would surely unite against her.

If there is one thing that conservatives have mastered that libs and leftists haven't, it is the ability to unite in the face of differing opinions and use their strength in numbers. Ironically, libs and leftists fracture in the face of difference.