Do I understand that all those atrocities happened? For sure. It is an horrible thing and it should be recognized as such.
What I don't get is the way this is dealt with. Forbidding a set of words don't really makes sense to me. Don't get me wrong, I still think it would be extremmely insensitive to use those words as it would be to use any other insult.
What I really don't get is the crazy different treatment those words get. It seems that even if you would be the least racist person in the world, if you mistakenly used one of those words (for example you tried to do a failed joke as Bill Maher did [1]), you will immediately be fired//terminated etc etc, even though everyone knows you are not racist at all. That doesn't make a lot of sense to me.
One can recognize that the treatment of Black people in this country (in the past and today) is definitely horrible, and also think that this whole forbidden word touchiness doesn't make sense.
[1] https://www.vox.com/identities/2017/6/3/15734024/bill-maher-...