Sorry for mindkilling content, but I remember reading on LW long ago that the political left is supposedly morally different, because it doesn't use the "purity/disgust" moral axis.

Then I found these photos online, and I wonder whether that is the microexpression (except there seems to be nothing "micro" when these people do it) of disgust. Or am I reading the expression wrong?

My point is that if someone has this expression pretty much stuck on their face, I find it quite difficult to believe that they don't care about the "purity/disgust" axis.

So what exactly is the lesson here?

• Is the hypothesis about the political left not using the "purity/disgust" axis wrong?
• Are SJWs psychologically very different from the typical left?
• Are the people on the photo very different from typical SJWs, or are their expressions very unrepresentative of their usual behavior?
• Any other explanation?