Call on your government to end the war. Immediately. That seems much easier than working down your list, because it will grow longer with each day of this invasion.
You might as well say "just assassinate Putin, it's much easier".
But agreed that figuring out something to do would be good
[1] https://en.wikipedia.org/wiki/Monday_demonstrations_in_East_...
There was an ECHR decision ordering Russia to free Navalny, but it was ignored by Russian government and Council of Europe did nothing about it.
One thing he can do, is to kill a few, give it lots of press, and it'll seem to people as if they'll get killed they too if they cause problems
Dictatorship is a form of government.
I'm pro-siege, because I see Russian activists as collateral damage to stopping the machine, but it's not their individual fault they can't overthrow an authoritarian government.