I feel insulted by your attempt to play dumb. Protesting is a way to stop the money you already paid from going towards the war.

Protests in Russia are not a way to stop the government from doing anything. Haven't been for over a decade.

That is debatable. Worked in Ukraine, I don't see what is so different about Russia, especially now when a lot of people understand that Putin is not just an authoritarian, but a completely deranged one.

Ukraine was never an authoritarian country, not even under Yanukovich. He tried to go there after the protests started, and the rest is history.

Russia has been an authoritarian country since 2011 at the very least - and arguably longer, just of a softer variety prior to that - when the regime crushed the largest protest in Putin's times (https://en.wikipedia.org/wiki/2011%E2%80%932013_Russian_prot...). By now, it has a special branch of internal armed forces - National Guard / Rosgvardia - which is used primarily against protesters.

So yes, there's a big difference in practice.

Well, yes it is obviously different, but it is a weak proof for impossibly of change via protest.

I did not assert impossibility of change via protest. Only that, given where Russia is now, it would have to be violent, armed protest. And you're not going to get people engaged in that with economic sanctions, no matter how severe.