Filmmakers most likely chose this name because it was about the Selma to Montgomery marches that Dr. King participated in. The name is Selma and not Dr. King because it is a story told over a three month period where Dr. King and many others planned the Selma marches.
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He wanted them to do more work on
The slave work
Aristocrats wanted to retain their power and wealth by taxing the people and the philosophers wanted to establish democracies that would give more power and wealth to the people. Basically the condition of the life of the people was so bad compared to the decadence of the aristocrats that revolution was inevitable.
One method used by the allies to contribute to the hoax involving the d day landing was to feed Germany with false information through the use of Nazi double agents; other method was to plant fictional radio transmissions about movements of the troops; they also planted dummy inflatable Sherman tanks and dummy landing crafts.
He helped to stop child labor laws from being inhumane or harmful. Since the employers only cared about getting profit.