No, not disarming, but arming with a better gun than a high capacity 9mm (I'm just assuming that's what they're carrying). Sure 9mm is nice since you can carry 15+ in a magazine... but you need every single g**damn one of them.
Cops should be carrying a gun capable of a one or two shot stop and they should have the proficiency to actually do it. Here, one cop fires nine rounds and another fires seven! In a densely crowded street. That's a lot of bullets flying around in public that didn't really have to be there. And none of them were from the perp.
People who carry in crowded places-- civilian or police-- need to be thinking about having enough stopping power and good enough shot placement to be hopefully using the minimum number of shots. It's not the place to spray and pray. And Yes-- I'm completely aware that under stress it's a lot harder to actually hit anything than it is to make armchair comments on the Internet. But decisions made at the top can set up the cops on the street one way or another. They can be focused on maximizing firepower or they can be focused on training for one shot, one kill.
I've never liked the 9mm as a police round. It changes the thinking away from careful shot placement and instead toward "overwhelming firepower". It tends to lead to too many bullets flying around in public, IMHO.
To be honest I am not that familiar with guns and which is more appropriate in what circumstance.
If I were forced to choose I would say give them the gun Dirty Harry used and turn em loose on the bad guys