Those are maga thugs. You made the distinction between the two earlier.
The conservative voters think everyone ICE is kidnapping or killing is a violent criminal, because the media they were brainwashed into believing tells them so.
And they're also trained that empathy is a weakness. That's why you often see them change stances when something actually affects them. It's not because they're incapable of being empathetic, it's because they've been trained not to be and the issue impacting them sometimes makes them realize how other people felt.
Of course, I'm definitely not saying that every person can be converted. Some people are too entrenched, but it's definitely not all of them. But it's absolutely a mistake to dehumanize every conservative like that. It's one of the main tactics of fascism, and removes empathy from the equation.
Also, the approach to converting these people is crucial. If they even catch a hint that you're talking down to them or trying to prove them wrong, they'll shut down. You have to make it seem like you're on board with their position, and ask clarifying questions to plant seeds of doubt.