I find that kinda hard to believe. I think you will find that when law enforcement measures are being proposed and legal systems are drawn up and political constitutions are written then a lot of time and effort is actually given to looking at examples and precedents from other places. What you seem to be saying now is that nothing can be compared with anything else, that everything is so radically different from everything else that not even the most tentative conclusions can be drawn. That all policy decisions must ultimately be made in a vacuum. Do you really believe this?
Nope. But in this thread several completely nonsensical comparisons have been made on both sides of the argument.
The thread topic is the Second Amendment of the Constitution of the United States, and needs to be understood as a part of a very long-visioned experiment by well educated people quite familiar with abuse of power and over-reaching by g'vt both to lower levels of governance and to the people themselves.
The Bill of Rights does not
grant permissions, but
restricts Federal intrusion on permissions. That distinction is very important. The Rights as written are to be the assumed baselin. Those who have not studied American history (and probably many who have) may not realize that the Bill of Rights was in itself a very contentious item. Some at the time felt that the Constitution stood well enough on it's own and needed no further elaboration; that personal freedoms would be held sacrosanct and the Federal g'vt would stand back and let the States figure out what was appropriate at state level, and so on and so forth down the jurisdictions. Others realized that any institution will gradually experience what we now call "mission creep" and begin to intrude on personal freedoms, inevitably, over time. Thus, the Bill of Rights, to specifically and explicitly keep Federal hands off certain areas. (Yes, I know I'm over simplifying. Thousand page books have been written on
both sides of the argument outlined above).
The 2nd amendment was not written exclusively in response to the threat of the British, as was suggested upthread, but in anticipation of the possible future threat of "all enemies, foreign and domestic," as those of us in uniform pledge to defend against.
Local jurisdictions are free to enact and enforce restrictions on "keeping" and "bearing" arms; the 2nd amendment is intended to keep
Federal hands off of that. People and organizations like the NRA that flip out when a university wants to ban concealed carry on campus have no grounds to invoke the 2nd amendment. A university, even a state university, is technically private property.
With that in mind, looking at gun use in Detroit and Dallas and Dublin are 3 different questions.