If you wonder how movie violence connects to life,
listening to Tarantino in this interview is very revealing:
In it, he uses Django's situation in the movie as a metaphor for his relationship to the interviewer.
Django is a slave who fights his way to freedom by killing all of the white people that torture and suppress him.
Especially toward the end, Django does not hestitate to shoot people immediately once he has the chance.
Psychologically, Tarantino interprets being confronted with a question he does not like as being "held captive like a slave".
In the movie, we learn that the logical reaction to a situation like that is to shoot your slave master.
Instead of threatening the interviewer with "I am going to shoot you", which would be the appropriate reaction according to the metaphor,
he says "I am going to shut your but down".
"You are not my master, I am not your slave." - "I am going to shut your but down."
Tarantino does not behave violently on the physical level, instead channels the "violence" into dirty language.
The thought, the image, the underlying pattern however is there, and it is informed by his own movie.
I think I understand now what disturbs me personally so much about Tarantino and his films.
That violence is not something that erupts in a catharsis, something that we become cleansed from through the movie.
Instead, Tarantino gives us this kind of "violence" as a natural aspect of everyday life.
"I am going to shut your but down".
To express it in more provocative terms:
What we learn in his movies are the thought patterns of a self-righteous jerk.
(BTW - the violence in Django is comparably comic and abstract compared to his other films, it his not his worst film in that regard. In fact, there are extremely long stretches of dialog.)