Americans and others get perverted history lessons from the movies. That is why so many of them are dumb as posts on real history. They seem to forget that movies are entertainment first, a gloss over of history second, or an outright fabrication of history.
Never understood why the “authorities” reacted so violently to the marchers in Selma. Didn’t they know they looked like complete idiots? Why not politely but resolutely tell the marchers “no”?