So you're saying the people banding together to overthrow their oppressors is waging war? That's like saying killing someone violently raping you makes you a murderer. Its textbook victim blaming, and you should be ashamed of yourself. Revolutions don't happen in a vacuum, they happen because of systematic abuses, i.e. a war waged by those in power against the people. Oppression is the start of the war, not the revolution. The revolution is self-defense, against the warmongers.
Defending yourself against imperialism isn't waging war either. The imperialism is the warmongering, not the defense. Again, more victim blaming bullshit.
War is always bad. That not a condemnation of self-defense. Self-defense isn't war, its a reaction to war.