Adolf Hitler, Pol Pot, Idi Amin, Osama Bin Laden, Joseph Stalin. These people are reviled throughout history for their evil deeds-murdering millions, starting wars, plunging their people into poverty, etc.
But everyone is capable of evil, just like everyone is capable of good. History is filled with people who had the potential to be reviled in history, but at the same time, history didn't give them the opportunity to become reviled in history.
So, who do you think had the potential to be reviled in history, but didn't quite make it?
Just to make it clear, while most of the people I have listed above were dictators, you can be reviled in history for many reasons. Some major, some minor. Go nuts.