For the subject matter being covered this movie does an excellent job of letting people know what was really happening at the time without being unduly violent. The whipping of a horse is the only actual scene in which someone/thing is hurt. Instead, the empty interior of a slave ship is shown, compelling statistics are cited (400 of 600 slaves dieing on one voyage), and things like shackles and an owners brand brandished by a former slave are shown. For those that are very perceptive there is a letter being read at one point that includes a very brief narrative about a child being accidentally burned to death while the accompanying video shows a very fuzzy worker transposed by a flame. Our child is very sensitive but was not overly bothered by any of these scenes.
Very pretty but typical shots of 1800 England add to the educational benefit.
Our 12 year old was not at all bored and really enjoyed the film. Hyper, visually oriented, or much younger kids might be.