I really think you are not giving the full story here. It just isn't fair to say "furthermore, guns are correlated with increased homicide rates". It does not take a genius to figure out that more guns = more gun related deaths, but it does take a bit more intelligence to look at the overal violent crime and how gun ownership affect that. The last time I read about the subject there was no proof available that low firearm ownership rates = low crime/suicide rates and higher firearm ownership rates = higher crime/suicide rates. My common sense says that if a neighborhood is known for having a high gun ownership rate then there will be a lot less crime cause people don't want to get shot. If i was a criminal then I would avoid places where I might get shot.
This is why I stated correlation does not equal causation. Suicide rates have dropped with increased gun control and following your logic, states with more guns will have lower crime rates and states with less guns would have higher. While only referring to gun crimes (assault with a gun, etc.), this is inaccurate and states with lower gun ownership (NJ, Connecticut, and such) have lower gun-crime rates (and homicides as a whole) then states that have more guns (ex: West Virginia). Now, while gun crime drops, does that mean overall crime drops? That I'm not sure, if I remember correctly there is a correlation, but I'm writing all of this off my prior reads and may lookup the "answer" later.
This whole gun grab thing feels like an emotional bs, for me it lacks proof that taking guns away from the population will make the country safer for everyone. Sure you might have less gun related incidents (this should be obvious to everyone, including children), but there is just not enough proof that it will not result in higher violent crime, burglary, rape etc rates. My common sense says that the result would be higher violent crime, burglary, rape etc rates, cause criminals would be less worried about getting shot.
There is certainly an emotional factor, but if that's what is needed, then so be it. This does not happened in other advanced democracies and there's a reason why, guns are not so available. Honestly, I really wouldn't care if crime remained the same, but guns were off the table. Crime is at all-time-lows in American history and guns make it more likely for said crime to not turn into a homicide.
Now, as for "proof." You can compare the lack of mass shootings (considering the U.S. hasn't gone more then a week in 3 years without one), or you could look at the very good example of Australia. 1996, guy kills dozens of people at a tourist attraction, the prime minister says "never going to happen again" and overalls the country's gun laws. They opened up a gun buyback program, illegal/legal gun, it didn't matter, bring it in, the government would buy it. Assault rifles are completely banned, semi-automatic rifles are only available to people that can show why they need them (aka the farmers out in the middle of no where defending their farms from the various Australian wild-life), and gun clubs were still allowed. In order to get yourself a gun, you had to go through a thorough screening process. People refrain their rights, can still go hunting and sport with their guns, but John Smith cannot walk into his local gun show, pick up a semi-automatic rifle, two hand guns, and a shotgun without a background check.
After all these years all I get to read is emotional people making an emotional case for banning guns, but if you mention disarming the police then everybody be like "Are you stoopid, who will protect us then?". More data driven research and less emotional bs pl0x. Getting really tired about reading/seeing the victims of a gun crime on national platforms, cause all this says to me and many others is that the people pushing gun control know very well that the data isn't supporting their stance and instead they are pushing the emotional aspect.
I am quite questionable about police. U.S., they lack training (ex: in my state you have to train longer to become a hair stylist then you do a police officer) and often over-use force. In modern-day America, I do think police need to carry guns, but their training needs to be enhanced and their needs to be a push towards non-lethal means. There are police in other countries in which they do not all carry guns, but I don't think the U.S. is anywhere near that point (and likely never will.)
If 92% (2007-2014) of these mass shootings happened in GUN FREE ZONES then maybe, just maybe it's the zones that make it possible for such events to happen. This is just a guess but before these gun free zones maybe the shooters were shot by other people before they managed to shoot that many.
Gun free zones are like fishing from a barrel with a hand grenade, it's very effective.
A sign is not going to deter a would be mass-shooter, it is meant to ensure students and adults know not to bring guns on campus (whether high school, college, etc.) Having guns casually on campus would put people on ease; furthermore, I guess your shooter can now openly carry his gun into the building. Nothing about these guns are illegal, nearly all mass shootings that have occurred have been completed with legal guns.
These guns are being purchased illegally, they are be purchased compArmed security guards might be needed, but that is not a solution to this problem, it is a "well, it's going to happen so lets just make sure someone can kill the guy before he kills too many people" solution.
Also, I'm not sure what your gun ownership perception is in the U.S., but not everyone owns guns, not even a majority of people own guns. Rather, it's a minority that own multiple guns.
That is the UK. Not tye United States. Two VERY diferente sociedad.
We should do away WITH the GFZ.
Thanks for your response to the post I made addressing everything you said.