20 Stupid X-Men Movie Mistakes You Probably Missed
6. Why Is Magneto Freed? - X-Men
The police in the X-Men universe are very bad at their jobs - it's usually the case in superhero movies as a rule, because it makes the need for heroes more pressing, but these guys are a special breed of dumb.
Take the cop who stands and allows a bullet spin into his forehead when he could simply side-step it when Magneto is showing off the extent of his powers. He probably deserved the pain, to be honest.
Worse though, is whoever looked at Magneto at the end of The Last Stand - a megalomaniac who had just been waging war on "normal" humans and was pretty close to achieving a huge genocidal incident - and decided he wasn't a threat. That can be the only way he's left to roam free at the end of the movie. Presumably the police believed that the cure also cured his villainy. The idiots. It's not like you'd free a mass murderer simply because he didn't have a gun.