Most people don’t even see (much less care enough to do something about) the injustices going on in their own society.

For fucks sake, what an incredibly disingenous whataboutism attempt.

Also since you are on about rationalising the actions of Russian soldiers, this is an actual invasion of another country we are talking about. These people are actively participating, whether they wanted to or not. For everyone of them killed chances are innocent civilian Ukrainians will not get murdered by them, have their homes destroyed by them or have loved ones killed or injured by them. You know, the actual innocent victims of this completely unnecessary invasion. Your rationalisation goes both ways.