Big Topic Questions

I choose dehumanization as my topic. I choose this topic because in the book, slaves were not treated like human, they're objects to their masters and slaveholders. My guiding question is, "How are all the masters treated to their slaves when the slaves are dehumanized ?". I need to find how cruel the masters treated to their slaves, they whipped their slaves whenever they want to and how the slaves feel when their masters treated so unfairly to them.