If you find this horrifying (and I hope you do, because there can be no moral justification for celebrating murder), then I encourage you to really think about whether we would not be better off without such extremist language poisoning people's minds. We have to try to stop escalating, or the cycle is going to destroy our society.
As someone of Eastern European origins I would celebrate Vladimir Putin's murder, especially since he's responsible for the murder for so many in Ukraine today (both Russians and Ukrainians). I think the reality is a touch more nuanced than the absolutist ethical stance.