Given that TV is not a good source of accurate history, it is not a good idea to watch this show and think that anything you are watching reflects what really happened during the days of slavery.
In the 1930's, when Hollywood was pro-South, slavery was almost always portrayed as a benevolent institution, with happy-go-lucky darkies working for generous and kind-hearted white masters. Gone With The Wind portrayed slavery this way, and the North was portrayed as an evil aggressor for forcibly ending this "civilized" way of life.
The current Hollywood line that all blacks were miserable and beaten, and that all whites were cruel, heartless, abusive taskmasters who mercilessly whipped their slaves, is as much as a lie as the previous pro-slavery portrayal. I'm not saying that slavery is ever a good thing, but exaggerating and lying about slavery does not serve the greater truth, which is that slavery is always wrong even if the masters are trying their best to be good masters, and the slaves are happy in their enslaved condition.
And that's because slavery perpetuates the idea that a human being can ever be legally or morally treated as anything less than a human being, with full human rights, inalienable, endowed by our Creator, and guaranteed in the United States Constitution. The ideals of the Declaration of Independence, written by slave owner Thomas Jefferson, was the death knell of slavery. What it proves is that though the some of the Founding Fathers owned slaves, they knew it was wrong, and what's more important, they knew that slavery was a violation of everything the American Revolution stood for.
So what Roots is going to offer is "slavery porn." It will show black people getting beaten to an inch of their lives, and white people doing the whipping, and none of it will get us any closer to the answer we seek, which is that all human beings, regardless of age, sex, race, religion, ethnicity, nationality, or status as born or unborn, is entitled to full rights under the U.S. Constitution, since we are all fully human and children of God. When Hollywood starts tackling current injustices, like abortion, with the bravery it tackles injustices that have already been resolved, then I will be impressed.