I certainly believe it! Colonization and Imperialism in particular have an absolutely brutal history. Japanese soldiers occupying China and Korea used to catch babies on bayonets, and had quotas for how many ears they cut off. Dutch occupiers of the Congo would cut off the hands of underperforming workers, including children, and give the hands to their parents.

The thing is, generally, humans are guided and shaped by material conditions, and material conditions improve with democratization and industrialization.