We do a lot of that as well though. Didn't we go in after Gaddafi, and Hussein, and Al-Assad, and tried to do it in Cuba and Nicaragua and the Dominican? It's not got much to do with Ukraine but Americans have virtually no moral ground to stand on when our government does the same stuff. If you can't trust government in domestic issues you definitely can't trust them on international ones.
I don't care that Putin invaded Ukraine. I've been that way all along. We don't need to be involved. We definitely don't need to keep funneling billions there. Plus we all know what the next step is.