No. I don't believe the state should have the power to end someone's life. That's my fundamental position. I would also argue that if it did, this is open to abuses of power, corruption, and miscarriages of justice that can never be fixed.
Are there people I wish were dead, and who I think deserve to be killed? Sometimes. But that's not a pleasant thought, and I certainly don't think that my emotions should be carried into action, because it doesn't get humanity anywhere in the long run.
As much as I support the Palestinian cause, and abhor the Israeli government, I'd feel really uncomfortable in an audience where I was being asked / told to give a standing ovation to flags. Particularly as he also threw the Ukrainian flag in there. Just because someone supports one, they might not support the other. And just because sometimes supports a nation of civilians in a conflict, doesn't mean they'd support the government represented by the state. I don't think anyone deserved abuse for not being coerced into doing something they didn't want to do. I just really hate being told what to do though.