Anyone who speaks against the Buddha or Buddhism in Thailand can quickly find out Buddhist’s perspective on violence in certain contexts.
But my point above was that Buddhism doesn't teach passivism it teaches non-aggression. A passivist takes whatever garbage is dumped on them and says "please, sir, may I have some more?" A practitioner of Buddhist non-aggression should be someone who doesn't dump garbage on others. Self defense is not aggression unless it starts to stray into a revenge, profit or a self-gratification trip and true compassion, as a Buddhist sees it, can mean taking life.