Anecdotally, every single person I have seen online talking about #charliekirk being killed for “a difference of opinion” has been white AND cis.
To them I want to say: “Bitch, he was never talking about you or your existence being a threat to him or his way of life so miss me with that difference of opinion bullshit”
So the indifference being shown to him is the same he’d show to any marginalized group. So no, it’s not “a difference of opinion”.