I disagree, most of the left are not low IQ

But, their brains are broken.

The left use only 2 moral concerns.
The right uses all 6 moral concerns.

The left has a oversized amygdala which makes them extremely sensitive to any emotional attack.

So, basically they are running on half their cylinders and on a hair trigger.
Further it seems that they are incapable of seeing the other side of the issue.

I wonder if they hear the right talking points, and it sounds like the parents in the Peanuts cartoons (waaa waaa waaa)