Anti-war might not even be entirely the right word, but it's possible that a more "anti-imperialist" sentiment is growing. Sort of along the lines of the old "world police" critique. A lot of these people are probably both sympathetic to Ukraine, but also not in favor of some countries extending their military and financial influence far beyond their borders.

I think Hillary Clinton said in an interview, something along the lines that Russia should be prepared for the West to turn Ukraine into another Afghanistan. Seems like a pretty harsh way to view the people that are supposed to be supported.