STEM is also totally captured by left wing ideology. It's still more accountable to reality through controlled experiments, due to its domain of inquiry being the hard sciences, so maintains more scientific rationality, but the situation is bad nonetheless.

Is this something you've experienced or something you've been told. Because if the latter than my experiences differ from what you've been told.

It's what I've observed, and experienced through personal interactions.

The sample size of the people I've interacted with is admittedly very small.

Fair, but I'll mention that I'm in one of the most liberal states in America and it's not as big in my department. I routinely see professors and my advisor say stuff that is far from PC. Though I have heard of a junior professor say that we shouldn't refer to orphan processes because it might offend orphans. Kinda wish I was there, because as someone who is orphaned (single parent, not both) I particularly feel offended that he would think we're so weak that we'd need to be coddled.

Our union doesn't give the STEM departments much respect. They seem to particularly hate CS and the Economists...

Admittedly my sample size is small, but it gives evidence that we shouldn't aggregate beliefs about people. I'll admit, I'm frequently frustrated when people hear I'm in grad school that they immediately think I want to lick Stalin's boot. Such an interaction happened just yesterday on here where a user called me a communist when I was calling meritocracy a fool's errand. They didn't see the irony and somehow those comments got removed. Rare occurrence here...

Thanks for sharing your experience.

CS and Economics are the departments least influenced by left wing ideology from what I've gathered. I assume Math and Physics are similar in that respect.