Question: Why wasn't Patrick arrested for killing the child molester?
Answer: Many/most people think child molesters are evil, disgusting, utterly loathsome, and irredeemable - they don't deserve to live - so a dead child molester is one less child molester. Even worse, Corwin Earle was also a child killer (although he claimed "it was an accident"). Many people, including police, would believe he deserved to die and Patrick did the right thing. Others, of course, would assert that "street justice" is not justice at all, but there would be little, if any, evidence that Patrick's shooting was not a justifiable homicide. IF Patrick were charged, his attorney would raise a defense that would most likely result in a "not guilty" verdict. Besides, this was a movie, and the audience needs to feel that justice has been served.
Question: How could Amanda have gone to school or even left her house? She was supposed to be dead.
Answer: A real life problem with abducted children, especially those abducted at such a young age, is that after a short period of time they begin to grow and look drastically different than when they were abducted. Amanda could have been home schooled for some time and passed off as the adopted child of her abductors to the general public after a relatively short amount of time. Unfortunately, the average person would likely not even recognize Amanda if they saw her out in public.
Question: Who kills Nick and shoots at Patrick when they invade that crack house with Remy? (01:02:50 - 01:03:45)
Answer: It is not actually shown who shoots at and hits Nick, so it is necessary to make a deduction based on what is known. The shooter was behind the front door and shot at Patrick when Patrick was trying to aid Nick. Patrick retreated to the side of the house and returned fire. When Patrick entered the house, "Bubba" was seen lying facedown on the floor with a gunshot to his shoulder, apparently dead from Patrick's blind shots. No one else was in the front room, so it seems safe to conclude that Bubba killed Nick and shot at Patrick. "Fat Lady" Roberta emerged from a back room and Corwin Earle was in the upstairs hallway, so - even though they were in the house at the time - neither was likely to have been the shooter behind the front door.
That's not Bubba laying on the floor, that's the old man who resides at the house - Leon Trett. Bubba was Patrick's good-guy kingpin buddy, played by the rapper Slaine.
Chosen answer: Even though he executes an unarmed man, it is doubtful given the circumstances that he would be investigated with much fervor for his actions. One police officer has just been shot and killed so Patrick's actions could easily be described as self-defense in the eyes of an investigator. Anyone making a claim to the contrary would risk having to stand up for a child murdering cop killer.
BaconIsMyBFF