I don’t think full auto does anything for cops except create a risk to the public. Cops are not the military and should not have military weapons, whether they are are APCs or SMGs and assault rifles. They should not have anything that is not available to the public. They should be able to use training and tactics defeat numbers, if that becomes necessary.
This is my point. Sometimes the bad guys have full auto. We saw it in California during and after a bank robbery. Doesn’t happen often but regrettably it does happen. To go home at night or the next morning I fully believe in Be Prepared.