Other mistake: Even though Mason Storm is avenging his family's slaying by corrupt cops and a politician, he has committed several crimes while doing so - he snaps the neck of a person when he has them incapacitated after a fight, then he commits 2 car jackings, then he holds someone at gunpoint, innocent or not he would have been arrested along with the conspirators for the murder and carjacking.
Hard to Kill (1990)
1 other mistake
Directed by: Bruce Malmuth
Starring: Steven Seagal, William Sadler, Kelly LeBrock, Frederick Coffin
Visible crew/equipment: When Becker is shot while eating a sandwich and watching TV, the leads to his gunshot squib can be seen coming out of the bottom of his trouser leg as he reels back from the impact of the blast.
Felicia Storm: There's blood on your shirt.
Mason Storm: It's not my blood, so you don't have to worry, do you?
Question: Why did Jack and Max try to kill Mason's son Sonny? They have their masks on and there's no way that Sonny would have identified them.
Answer: The cover story was that it was a drug deal gone wrong, which led to the murders. The child witnessed them planting evidence and would be able to blow the cover story.
Answer: He survived the first attempt of his family's murder. There's no telling what he saw or heard. As for the masks, the bad guys were taking no chances, security cameras, cell phones and the unexpected eyewitness.
Cell phones? I don't recall seeing a cell phone in the entire movie. It was all landline phones. Cell phones didn't really start to get used until around the mid-90s (a few years later).