Disclaimer:
(Have yet to watch end 15 minutes).
Brutal. Very, very hard to watch in places.
The inhumane treatment of people regarded as just another commodity really had me choked up. Both the ship's hold and choosing-slaves-by-examining-them-like-cattle scenes were as grim as grim can get.
But so important that that era's harsh realities are on record in all media.
And IRL, fully acknowledged by everybody involved.
And that the subsequent discrimination which trickled down through the years is learnt from and fought.
Certain figures within the current US/ UK political and social landscape make me question how far they've really evolved on that score, frankly. 
I was too young to see the original, but remember the huge talking point Roots made in the days of 3 channels, no online, on-demand, and barely any serious black representation on TV...
Think they team behind this version have tailored it pretty well, using film gloss and pacy drama in order to draw in a modern audience to the deeper issues.
Will be watching the unfolding story with interest.