Consider the Nazi atrocities and how everyone (rightfully) marks it as the worst event (at least in my environment) in history.
I wonder, if all historic events that belong to that category of severe events (whole timeline of events. From end to finish), were to be put into a closer vicinity in the timeline so that everything is viewed less historically and more emotionally equal as to what happened.
Who would be the worst offenders?
The Spanish
The Portuguese
The Chinese
The Germans
The Japanese
The Britains
The Americans
(Did the koreans do anything in regards to a genocide/ethnic cleansing?)
Some other (historic) state?