So few facts, so many assumptions...

It's pointless to speculate over something in which so few details are present, not to mention silly to presume that the nature of the problem lies solely on a single factor like the firearm the policemen were carrying lacking a manual safety.

For all we know, the policeman could have been carrying an M&P with a manual safety and the criminal was familiar enough with firearms to switch off that safety as he was drawing it from the officer's holster without missing a beat.

On a personal note, I find it extremely distasteful how so many folks will essentially use the coffins of the dead as soapboxes to push their own biased opinions. I've come to expect such callous disrespect for the dead from the charlatans who dabble in politics who attempt to reshape the country as they see fit, but it never ceases to disgust me when people behave in such a way for no other reason to reassure themselves and others that their opinions are correct.