Bathsheba,
Yes you are. It is an absolute masterpiece IMHO. It is at times very uncomfortable viewing and as I said in my review of it(on here somewhere) one has to admire the skills of all concerned, particularly the white actors who must have had reservations about some of what they were asked to do and say, which is testament to them and Steve McQueen for drawing such performances from them.
Set time aside to watch it without any disturbances though, it requires total attention.