Just as long as someone decides when they can have it
. The exact same argument can be and is made made against gun ownership.
In this day and age the people could never overthrow the government and we aren't going to be invaded so you don't NEED an AR-15, AR-10, M1A, Garand, Mini 30, etc. You don't need a .50 BMG rifle, only the government should have them, you don't need more than 10 rounds to defend yourself with. These are all decisions someone has made about other people owning firearms.
Statistically you wont need a gun in a safe part of town, if you plan on going to or live in a bad part or are going hunting you can drop by the police department and pick up a firearm. Urban environments are very safe, especially places like Chicago, New Orleans, New York, DC. The police never encounter heavily armed people and violent people and certainly aren't targets of terrorists.
We know that is a ridiculous opinion, if we expect law enforcement to support our right to keep and bear arms we need to make sure we aren't applying a double standard. We also need to be sure that we properly support those that risk their lives every day to do what they can to keep society from tearing itself apart.
Could this be misused? Sure but that is what oversight is for, and the best oversight is locally held elections. The police chief answers to the mayor, the sheriff directly to the people and both want to get re-elected.
The vehicle itself makes excellent mobile cover and they can and have been used to recover injured citizens and police officers. Even unarmed I imagine it would be VERY effective in helping people decide to end a violent riot.
They say right off the bat that they will probably never use the gun but "It is better to have it and not need it than need it and not have it"