Quis custodiet ipsos custodes?
In the UK, the police force has traditionally not been routinely armed with firearms, unlike many other police forces in the world.
In Scotland, there were several police forces, but these have now been amalgamated, and now instead of Strathclyde Police, Highland Constabulary, Grampian Police, and so on and so forth, there is now Police Scotland.
In the previous system, when there was a problem that was severe enough in say Lothian and Borders Police, then a different force, such as Strathclyde, would have its officers investigate the problem. As such, those investigating officers careers were not dependent on keeping a good relationship with the Lothian and Borders chief constable.
All change now. With a single police force, then everything is always going to be an internal investigation, conducted by officers whose careers are dependent on keeping in with the chief constable and other senior officers.
With a single police force, there are no others to compare and contrast policing methods, no challenge to correct failings, or make improvements. Compare with England&Wales, where anti-terrorism policing is done under the Metropolitan Police, and can be subject to review by any of the other police forces in England&Wales. In Scotland, there is just Police Scotland, and again, internal review only.
And now back to firearms. Previously, police firearms were kept in a locked safe, which could only be opened, with the authorisation of a senior officer, in response to a specific incident. Armed response vehicles also had their firearms in a locked safe, again, it could only be opened when authorised, when responding to a specific incident. Firearms officers could also only use their weapons with the authorisation of senior officers.
Now, particularly in what was the Highland Police region, the firearms officers, are routinely carrying their handguns and tasers, in response to all incidents. Highland region had the lowest violent crime rate in the entirety of the UK.
The chief constable and the Justice Minister at the Scottish Parliament, feel that this is OK, that these officers are police officers first and foremost, and that having to authorise firearms officers was 'too slow' because the firearms officers would have had to go to their police station, or stop their vehicle, to arm themselves.
So, in say Inverness, when it is pub and club closing time, firearms officers who are on duty at the time, may be called to support other officers engaged in street policing of rowdy drunk people. They did this before, but now, they are doing it while carrying weapons, and have the authority to fire those weapons of their own volition.
Now, in the rest of Scotland, if you have reason to request the assistance of a police officer, there is a chance that the ones that turn up, will turn up wearing body armour and carrying firearms.
And the Justice Secretary, and the SNP, do not believe that this is in any way, a change in policing or a change in the public's relationship with the police.
"Why should anyone calling on a policeman feel uneasy if body armoured officers with firearms turn up? Unless they have something to hide." seems to be the attitude now.