I understand that folks don't always get to trial, and I have the utmost sympathy for the families of those whom he killed. Nonetheless, the officers (presumably) took an oath to uphold the law, and the Constitution is the supreme law of the land.
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman