>and what would data tell why guns have to be restricted?
We have banned, restricted, and unrestricted classifications. There are good arguments for fully automatic weapons, concealable shotguns and handguns being at least restricted, and for fully automatic and concealable weapons to be completely banned. I'm not going to rehash the arguments, because frankly we're likely going to disagree on most of them and neither of us are going to benefit from rehashing the debate. There are many arguments and viewpoints, but the salient fact is 85% of Canadians view the arguments and decide gun control under some logical framework is needed and support it, while Americans largely take the opposite side which can be traced to cultural and other differences between the countries.
That being said, the fact that the majority of non-domestic gun crimes are done with restricted/banned weapons that are being illegally imported from the states demonstrates a few things.
1. restricting access to those weapons is in fact the correct approach
2. internal restrictions need to be accompanied by stricter border enforcement due to the prevalence of guns and gun culture south of the border. Making it difficult to get legally needs to be superseded by making it incredibly difficult to get illegally first/foremost.
If anything good is coming from the current political nonsense, Canada's stepping up border protection has actually made Canada safer from US drugs and guns illegally crossing the border north, while having almost no impact on the traffic south as Canada Border agents don't stop or search traffic moving south without specific requests from US officials (something most Americans seem to misunderstand about border crossings)
>Is there data for this question which would back restricting populations from having tools of self defense against tyrannic government
Is there data comparing the known and predictable harms to a population having open and unrestricted access to weapons (see the impact of US social problems exacerbated by gun culture vs other countries) vs the concept that it would in fact help in 'self defense against a tyrannical govt'?
Frankly the 'standup against a tyrannical govt` argument has held little weight for decades as modern militaries and equipment vastly outclasses what any civilian can and will have even in the US. A proper democracy with checks and balances will serve far better than any number of civilians with military purpose weaponry, in fact the argument more so applies to a strengthened education and judicial system to ensure tyrants can't bloviate their way into power and remove all checks and balances.