As I tried to explain a couple of times. We don't see it as slavery. People dress themselfs like moors. Not slaves!
If that's an insult then it's an insult to dress up like any race.

Zwarte Piet isn't a slave. At some point in time he probably was but not anymore!
The story already changed. It changed a lot even from when I was a boy.
Changing it so drastically that zwarte piet wouldn't even be part of it anymore would for many of us be the same as canceling the feast all together...

In time it will change a lot more, but let it change naturally and not by force!
It will only be seen as an attack to the dutch/belgian culture.

You must understand our point of view. A couple of years ago we needed to remove the cross from his miter and now we need to remove zwarte piet all together...