No I don't think they glorify it but they're trying to send a message against the idea of slavery through movies. When I watched the movie The Butler I cried. In the end of the movie, "This film is dedicated to the brave men and women who fought for our freedom in the Civil Rights Movement."
I'm not aware of anyone who glorifies slavery. I think it is a dark part of our past that most people are not so proud of.
You kinda have to ignore/gloss over slavery in order to celebrate anything during that era. Because by today's standards anyone who owns slaves is evil, no matter if they form a country or discover electricity or whatever else they accomplish.
No one "glorifies" slavery in the US except maybe the KKK .. and they're crazy anyway.
It's never been glossed over .. it's a very serious and sad part of US history.
Sure .. but not the loss of slavery.
I don't think that slavery has been reflected on enough by US society or the world in general. We've only exchanged one form of it for another.
D good ole days