Historical vs. Documentary Movies

I prefer documentary movies over historical movies. To me documentary movies are more educational  and offer a more historical approach to a subject. I think documentary movies are produced after a great deal of research. What I like is the eyewitness accounts of an event. For example, a documentary of the Holocaust will have testimony from Holocaust survivors. Their eyewitness accounts provide vivid images of the brutality committed by the Nazis. It has a profound effect on people. Also documentaries provide video footage of historical events. I am certainly moved by seeing and hearing scenes of Jewish people hoarded onto trains, then shipped to death camps. Once at a death camp they are split into two lines. One line is headed for the gas chambers. The scenes of people stripping their clothes off and entering the chamber of death is sickening. I feel that documentaries provide the view of historians. On the Civil War documentary they showed the opinions of prominent historians.  
Historical movies show a Hollywood version of history. I mean they certainly show the movie in a historical light, but they either add scenes or dramatize the event. I believe that this will certainly stimulate the interest of people to research or be interested in a particular subject. However, they may not get the true version of the event. For example, Hollywood over does it on violent scenes and romantic scenes. For a historical movie, it may spice it up and draw interest, but people may come away with false notions of the event. For example the movie on the first Black soldiers fighting in the Civil War was a great movie. The film had Denzel Washington and Mathew Broderick. However,  there was a scene where Broderick playing the part of the colonel met Frederick Douglass. Historians have disputed this meeting ever taking place.