Bullets that miss the good/bad guys never cause any damage or hurt anyone.
Unless the protagonist's significant other is closeby, in which case:
1. If it is late in the movie, they will be struck, but it will be revealed close to the final credits that it somehow wasn't fatal as everyone had mistakenly thought.
2.a. If it is early in the movie, they will be struck and will surely die, providing the necessary motivation for the protagonist to plan and eventually carry out his or her revenge over the course of the rest of the movie.
2.b. In the event the movie is a romantic comedy, they will be struck and will surely die, providing the necessary motivation for the protagonist to declare he/she will never love again, only to finally be persuaded to finally hook up with the protagonist of the opposite sex because he/she has spent the entire course of the movie persuading him/her that life is worth living.