Four Brothers/YMMV

Fridge Logic: the bar where Fowler shot Lt. Green is full of people. One of them should have been able to see them get in a disagreement and then heard the gun shots afterward. The biggest problem is that Lt. Green walked up to his police car to leave and Fowler shot him right next to it so shouldn't there be a security feed of him killing his own partner?
- Why didn't Fowler try to destroy the security tape and police report of him meeting with Evelyn Mercer? He wouldn't have gotten found out otherwise.
Jerkass Woobie: All of the Mercer brothers have had tough lives, but it can be inferred that these guys were only kind to their mother.
- Not really, it's just that for most of the movie we only see them interacting with people they have a reason to be pissed at.
Tear Jerker: Hard boiled Bobby crying alone in the bathroom after seeing his mother's room. Jack's Death. Jack is shot at first only in the chest but as he's trying to get away a Mook shoots him again. It's not clear how many times. Still, he falls to the ground screaming in pain and for his brothers, Bobby in particular and you can hear him over the gunfire. The entire fight becomes a desperate attempt to get to him only for him to die minutes later. Everyone breaks down. To drive the point home, after Jack's funeral Bobby looks up at the pictures on the wall, Jack's picture has a bullet hole through it.
- Not to mention the boys watching the tape the store owner had of the thugs shooting their mother. It's so bad that Angel turns away before the actual shooting and they all can't help crying during her final moments.
Plot Induced Stupidity / What an Idiot!: Yeah Jack, chase after the stranger in the hockey mask. Can't possibly see that ending badly...