Citizens also don't routinely own firearms in the UK, so the two are related.

I wasn't the one making a claim about what happens in other countries, so I don't need to provide evidence of their claim. My claim is that the actions in this specific situation showed no misconduct and was consistent with similar situations (non-compliance and building searches) in this country. You want evidence? Use a right to know request for the procedures from your local department. You can also read books like The Tacticle Edge to gain an understanding of what's actually going on.