You have hit on the problem Bonk. Several were not very bad at all but the next guy hated him. We often all we get is a view from their worse political enemies. As with everything you have to dig deeper.
It helps to have the ability to control the press. When there was religious strife between Protestant and Catholic the Protestant’s had the printing press. The Catholic burnt a few hundred people in Spain and everyone knows about it. The Protestant’s burnt thousands of "witches" and there is hardly a word.
In the late 1800's there was a "good government" movement in the US. Those that tried to stop reform were known as the "stallworths". Those for reform were known as the "goo-goos". Press is important.
It is why the majority of conservatives have a hard time defeating a minority of liberals. During elections the press will not even use the world "liberal". The term "far-right" is far more common.
As long as you remember that Hollywood version of events is just a story you'll be fine. Sadly this twisted view of the world is all some people get; liberals good -- conservatives bad, end of story.
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There are three kind of liberals;
Stupid, ignorant or evil
The result is always evil but the intent is not always evil. Not that it makes much difference in the long run.
No one here is exactly as they seem. - G'Kar