Je Suis Charlie

I don't think that's true. I think you're getting a biased sample.

It's certainly true that the right is being loud, but that is to be expected. What is different, this time, is that this man was assassinated while engaged in an almost platonically pure act of free speech. He was literally killed for expressing an opinion in a public square, and it happened from the left, so there's broad-based recognition that something is wrong. Right now, the only faction that isn't being loudly critical of this act is the extreme (mostly younger, online) left.

That is not to say that the other incidents you're citing are any less wrong, or that you won't find crass commentary about poltical violence on all sides of the political spectrum. No political party is above the fray, but Caesar's wife must be above reproach. The left has made an identity out of being liberal, and being liberal, originally, means being broad-minded and tolerant [1]. This is a fundamental violation of that principle. I think it's easy to over-generalize from the actions of a single individual, but when you add in the fact that the assassin was quoting reddit memes, and couple the giddy celebration on bluesky...it's hard to ignore the cultural trend.

I personally identify as classically liberal, I have very little in common with Kirk's politics, and I'm horrified by the assassination. This is a throwback to a form of violent reactionary protest that the US hasn't really had to deal with since the 1960s, and for the first time in my recollection, it's coming from "my side" of the political spectrum. We need to exorcise this demon.

[1] To be completely clear and pedantic: I am not suggesting that the right is not liberal in the classical sense, nor am I implying that they should strive for anything less. I'm just making an argument about perception and self-identity. For better or worse, the US political left has self-labeled as "liberal", and dresses up and cosplays in the image of an educated, erudite elite. To have members of that tribe resort to violence to suppress speech -- to celebrate that violence -- is a wholesale rejection of the fundamental tenets of the identity itself.

  I don't condone the attack on Charlie Kirk. I think political violence in a liberal democracy is a bad thing.