As usual the producers show mankind as evil and aliens as good. The same theme over and over and over.

slavery is wrong and as the reviewer below mentions, is still happening. It was never abolished, just changed. Money is a much better controlling factor then the whip could ever be. And we are all controlled by those that would enslave humanity using it. This was a good episode and made some good points about "slave masters" and how they feel about they're need to control. A slave master will never grow a heart and become compassionate. It is not in his make-up to be so. Also, makes good point about humanity and our space travel. If we did find a planet where we could exploit the beings of that planet, would we? We did it to our own kind and still do...greed, money and power are more important then living creatures. We still kill animals for sport...and food, that could be replaced with a purely vegan diet by now.

All of you who think slavery ended a long time ago obviously can't or don't read. There are more slaves today then there were during the trans atlantic slave days. Look it up. Good episode.

"Man has no chance, because man sucks" seems to have been the dark message at the end of 90% of these. This episode sucked - It presumes that the west hasn't learned about slavery. If I wanted to see some 'lessons about slavery' material I would have picked a Huckleberry Finn type story over a sci-fi uncle tom's cabin.

To; Abc Xyz , No remember Liberia. 'USA's folly of the 'return of the slaves' to Africa ?? So no way to JUST 'ALL OF THEM' haha but on another note the next story is ready !! good night person....