Tell me what the main message of the film of 12 years a slave if it was portrayedby the director

The main message of the film of "12 Years a Slave" is the cruelty of slavery as an institution. The director Steve Mc Queen's portrayal of mistreatment forces audiences to confront it in long uninterrupted scenes that force us to feel the full impact of human cruelty. Rather than explaining things overtly through dialogue, the characters' behavior tell us of the the subservience to survive slaves had to endure.