3) Law enforcement guns are not DAO & heavier triggers so that they "don't shoot the donuts out of people's hands". They do that so that it requires a very deliberate pull of the trigger by the officer before using deadly force. The last thing police depts want is a bunch of cops running around town with light triggers accidentally shooting people when the adrenaline starts kicking in.
They said the same thing about Glocks because they don't have safeties. You can't blame a light trigger (which a Glock trigger really isn't, at least not to me) for a lack of training on the officers behalf.