God Bless America (2011) http://www.imdb.com/title/tt1912398/
Frank is a recent divorcee living next door to inconsiderate assholes. He calls his ex to coordinate a visit from his young daughter, but the daughter is a loud unappreciative disrespectful brat and refuses to visit. Then Frank finds out he has an inoperable brain tumor that will soon kill him. While contemplating suicide he glimpses a reality TV show featuring a rich unappreciative disrespectful brat's 16th birthday party. Frank decides to put off suicide for a bit, steal his neighbor's car and drive to that girl's school where he shoots her dead. Roxy, one of the newly dead girl's classmates, takes a liking to Frank's "style" and begs to be Frank's accomplice on his newfound mission to rid society of its most repellant citizens.
Written and directed by Bobcat Goldthwait. Chances are knowing who he is depends on your age.
Stars Joel Murray as Frank. Even f you don't recognize the name you'd probably recognize the face. And yes he is Bill Murray's brother, but he's not that Brian Doyle Murray guy, he's a different brother. I don't recognize his sidekick Roxy, played by Tara Lynne Barr, because I've not watched any of her previous work. She does well and the two have a believable chemistry which really sells the film.
The film reminded me some of "Super" although its dialog was a bit preachier and wordier. Plus Roxy in this film is quite a bit saner than Libby in "Super". If you've had any exposure to reality TV shows over the past 10 years the thinly veiled analogs in the film are easily identified. This film's TV shows aren't likable and the people in them aren't likable, just like for reals.
The film is a simple comment on what seems to be the current dominant style of American television shows and their influence on pop culture and the general public, taken to a logically absurd extreme and wrapping up predictably. It is also entertaining enough if you enjoy bluntly obvious violent dark comedies. I didn't mind watching it.
Not nearly as polished (nor as brilliant) as "Office Space" and "Idiocracy", but comfortably fits in the same general "commentary on society" genre. If you haven't seen "Office Space" or "Idiocracy" I'd recommend seeing those more, but it wouldn't hurt to see all of these films.