"Basically villains people say was right/were right but their actions and choices are so obviously horribly wrong that you missed the point of them."

1.Tai Lung(he was justified in being mad at Shifu but rampaging and destroying the village and most definitely killing innocent people all but proved Oogway's point in a sense.

2.Dracula(this man was allowed to kill the ones who killed his wife but he shouldn't have decided to go for mass murder and basically genocide)

3.D-16/Megatron-dude was allowed to be angry at Sentinel prime but he clearly just wanted pure revenge and destruction, not justice and dropped his own best friend to die.