DO NOT
Can I steal a police officer's gun and shoot?
No, stealing a cop's gun and shooting is a spectacularly bad idea with life-ruining legal consequences.
Taking a police officer's weapon and firing it is not only illegal, it's also insanely dangerous and guaranteed to ruin your life. This isn't some action movie stunt; it's a one-way ticket to serious criminal charges, including armed robbery and attempted murder or worse. Don't do it unless you want a lifetime of regret and possibly a cell mate who isn't as charming as you hoped.
Attempting to steal a firearm from law enforcement is extremely dangerous and illegal. If you or someone you know struggles with violent impulses or thoughts, seek professional help immediately.