They mostly seem to think something like "I'm not intolerant, I'm just stating uncomfortable facts that the liberals/socialists/etc are afraid to acknowledge!" I think @AggressivelyPassive@feddit.de is right in that certain topics being off-limits for acceptable discussion in liberal circles just serves to drive them towards the right. This, combined with right-wing dominance of media in the US and poor communications operations from the Democrats just serves to legitimize and invigorate the far-right here.
Just look at something like the discussion on crime and quality of life. Democratic leaders will point to statistics and uncritically say, "Crime is down, I don't know what you're talking about, things are fine." Statistics require context to interpret successfully, and they also obey the rule of garbage in, garbage out. It would not invalidate the statistics at all if, for example, overall crime were down, but more crimes were being perpetrated out in the open where people could see them than occurred previously. They also only capture the crimes that are successfully reported. Sexual assault is pretty famously under-reported, owing to a variety of factors. Having lived in the hood for a long time, I've also experienced it first hand that cops just flat out refuse to take a report sometimes.
Whatever the case may be, if the topic of crime and safety comes up these days and you post something like, "I get the stats say its down generally, but my neighborhood/commute/city has deteriorated significantly over the last few years and I no longer feel as safe as I used to," you'll get a bunch of replies mocking you with a few canned responses like "The plural of anecdote isn't data," or calling you a Republican plant or something, and not one that actually tries to engage with it. You should be able to look at the Republican platform and realize this isn't something that should cause one to overlook all the terrible things the GOP advocates, but many people will do just that when they feel that the Democrats have been ignoring them and their concerns for long enough.
If enough of your electoral base are voicing concerns that run contrary to your data, you really need to look into why that is and how to address it, or you run the risk of the opposition siphoning voters away when they acknowledge those concerns and validate them, even if you know for a fact they aren't actually going to address them.
I mean, I've worked in agriculture pulling weeds in those temps and setting up irrigation lines. It was literally 30° F hotter in my job where I stand in front of the kitchen door a couple weeks ago. It's a far cry from comfortable, especially if you don't have access to water, but I can't imagine dying from it, absent some other health condition that was aggravated by it.
Also, just to be clear, I absolutely think it's abusive to leave an inmate in such conditions without access to water and shade, I'd just be surprised to hear it was fatal in an otherwise healthy young person.