They keep showing video of that bank robbery in California back in 1997 as evidence that this is what they face very day on their beats and they need an MRAP and high powered semi-auto rifles and militarized equipment in order to stay alive to do their jobs.
If we think we need militarized police, then we have already lost our ability to be a free people and liberty in America is already dead and never coming back.
The response being to arm cops with light infantry weaponry designed to maintain a high volume of fire at intermediate ranges. To my mind this is perhaps the least appropriate of all categories of weaponry for use in an environment where the goal is to protect civilian life above all, not to destroy the enemy at all costs.