oppressor
noun [ C ] uk/əˈpres.ər/ us/əˈpres.ɚ/
压迫者;压制者;暴君
someone who treats people in an unfair and cruel way and prevents them from having opportunities and freedom
Sisters, we must rise up and defeat our oppressors. 姐妹们，我们必须起来打败压迫我们的人。