_Why Is Slavery Bad?_

For the same reason that taxation is bad: 

"Most people agree that slavery is immoral. But what makes it so? Slavery denies a person the right to use his property (body) and the fruits of his labor the way he sees fit. Slavery forcibly uses one person to serve the purposes of another. Tragically, most Americans, including blacks, whose ancestors have suffered from gross property right violations, think it quite proper that one person be forcibly used to serve the purposes of another." ~ Walter E. Williams

https://www.youtube.com/watch?v=hw01fB3hqBM