Close minded as in not receptive to other peoples views.
Disclaimer: i consider myself left wing.
But at the same time, I'm quite happy to have a talk with someone down the pub who might be anti immigration or anti abortion. As long as they've thought their point out properly, im open to debate and i dont feell offended by their views.
But it feels like a lot of the left wing people i come across just go into "racist twat! Fucking tory!" mode- like theyre incapable of seeing that situations are often a bit more complex than just this is right/thats wrong.
For example with Brexit, i voted remain and was gutted by the result - at the same time, i felt a bit irritated by fellow remainers "theyre all little englander tory twats" attitude to brexiters. Yeah, some of them are. Others just have a different POV, you know?
I was discussing this with my mum and she said back in her day (im assuming this means the 70s!) "conversation felt more nuanced".
It sometimes feels like a lot of left wing people just want to live in an echo chamber. I think you need to try and keep an open mind to different points of view. You clearly dont have to agree. But you can at least accept that people have different mindsets because they've had different experiences - it doesnt make them a worse person though.