Character mistake: The two fake cops that hit the prisoner transport bus used a suppressed Beretta 92FS and a TEC-DC9. At the press conference, Capt. Fuller says that they used AK-47s.
Other mistake: After taking their "road trip" way out in the desert and dropping Montel off at the penitentiary at the end of the movie, they are just getting back on the road and Hondo says that they will respond to the "211 in progress" at the diamond mart back in L.A. The camera shot then makes a point to show that they are out in Joshua trees miles from anywhere.
Deliberate mistake: When the procession gets ambushed in the street by the guy with the automatic weapon, he shoots at the police cars. There are no drivers in the cars.
Deliberate mistake: A lot of the supposed handheld footage from bystanders on the scene couldn't have been filmed as such. People are on the ground, but the handheld footage is close to the action, as if the bystander is right there next to the action. This is a common mistake in a lot of movies.
Plot hole: Alex Montel is arrested and then held because his identity cannot be confirmed. This is not a valid reason to hold him, unless he is a terror risk which is never mentioned and the FBI are not involved. His expensive lawyer should have got him out on a bond with no issue at all.
Suggested correction: I absolutely HATE defending the way TV depicts legal processes, BUT in this case I have to agree he could be held pending verification of identity. The reason is that he was arrested, not merely questioned, and the bond judge would insist on knowing his identity before setting bond. The only other way he might get out is if the arrest was bogus and the lawyer could convince a states' attorney or an arraignment judge of that. (Sorry, I didn't review this episode, and I don't remember the arrest!).
He is stopped for a traffic violation and then arrested for that. They don't even know he murdered his uncle, and yet he is held in custody. Even if the judge insists, there would be a bond payable and Montel would pay it and escape.