There are a LOT of bots out there. They all parrot the same talking points, and the same insults. At the moment the one you will see the most is a variant of 'fafo.'
If you try to argue with them you will get a stock response like 'everyone I don't like is a bot.' Or just more of the same debunked talking points over and over again.
It is also not unusual to see a bot over different videos/articles/posts making disturbing and inflammatory comments aimed at which ever side is more present in the discussion: If it is a left leaning media piece, they will pretend to be hardcore neo-nazis and MAGA supporters. If it is a right wing space, they will magically become the most stereotypical 'radical left lunatic' you've ever seen.
These aren't just deeply unserious trolls, most are not even people at all at this point. Bot farms are the real agitators in this situation. Pitting both sides against one another in the hopes of destabilizing an entire country. They are run out of Russia, China, and parts of Africa and India.
The people saying it was 'justified' are either from these 'troll farms' or they're people who have absolutely no empathy towards cold blooded murder. But there are far fewer true sociopaths than there are bots.
Do not engage with them. If your first reaction is rage: do not talk to them. Block them, report them. They are an obstruction to the truth and a drain on your energy/
As for Trump, Vance, Noem and the rest of them: I don't care what they think or what they say. Their takes on real world issues have equal amounts of 'truth, justice, pizza, and alien abduction' (that is to say: none at all.)
As for the murderer: Justice does not always arrive swiftly, but it always arrives.
For example: decades after WWII, people hunted Nazi's and their collaborators into the grave. Some were caught, tried, and either executed or imprisoned. Some spent their entire lives running and hiding for murders they had committed for the reich.
Either way would be a fitting end for the kind of person who would join a government secret police and shoot an unarmed woman in the face.