"I used to have support for the Native Americans, but then a tribe massacred an outpost on the land that was slowly being carved from them by colonizers. Now I've lost all goodwill for their struggle"
The indigenous, oppressed peoples proceed to get wiped out and the colonizing states take over the entire land mass
This type of violence does not need to celebrated. It should be mourned as tragic. Its perpetrators condemned.
But so many are applying fairness or rules to a conflict that has neither.
If you create the conditions for war and terrorism, do not be surprised when war and terrorism come.