what are you even arguing? 
comedic relief in instances where no ill treatment of slaves are involved....is wrong?
what jokes were cracked or laughs ringing out in audiences when the dogs ripped that man apart?
what jokes were cracked when they had their slaves fight each other to the death?
are you seriously trying to pose that it's wrong to have instances of comedic relief simply because it depicts brutal acts towards slaves in said movie?
did you say this about Pulp Fiction having a rape scene, and there still being parts of comedic relief?
it's like you want to truly believe that Django Unchained was supposed to be a serious movie about slavery from start to finish....and that anything deviating from that is worth criticizing.
your going around making up rules for shyt..with nothing to back them.
you continue to talk about the scenes in the movie that are later followed with comedic scenes. But yet when you mentioned inglorious b*stards, you can't describe a similar situation. The fact that the movie was not a "serious" movie that depicted the real atrocities done to black folks is one argument
But the more simple argument for you to address is where are the other films that are not "supposed to be a serious movie" that shows the real atrocities done to other cultures?
What's your take on Bamboozled? Haven't seen it, but isn't it basically a parody of how the media negatively portrays black folk, was there any humor involved?
What about Don't Be a Menace, Blazing Saddles, Soul Man, Watermelon Man, A Day Without a Mexican etc.?
Don't think that's the case as shown above.
Can't say I've seen all these movies, but I don't see how these movies take away from my original argument that was specific about the various approaches to depicting the historical ill-treatment towards different cultures. Movies like Bamboozled, Watermelon Man, A Day Without a Mexican are for contemporary commentary, while injecting humor
Don't Be a Menace, like Haunted house is suppose to be some form of "black comedy."
Soul Man, from the description of the movie, a white dude became black inorder to get a scholarship to Harvard. The caption reads, "He didn't give up, he got down"

I could only imagine the stereotypical black behavior throughout that movie
I don't think he trivialized slavery at all...in fact arguably the funniest scene in the film pokes fun at the absurdity of the KKK

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Every time there was a serious slave scene it was really jarring or intense and most def NOT funny...again this is something you don't know if you didnt see the film
ok, show me a movie that adds comedic relief in the depiction of the real ill treatment of a group of people? The same director used the back drop of war, not the holocaust use of concentration camps and gas chambers, to inject comedic scenes with actors playing jewish soldiers. That conscious decision by QT does send a message to the masses