Donald Trump wants to arm teachers with guns

[Wyrd of Gawd]

You said you had suggestions from places where things work. That's what I was asking you. What suggestions do you have for cities like Chicago who have strict gun laws but have high gun death rates  by criminals and gang members with illegal guns. What would you suggest for Chicago, for example, that works in your country?

First, what works, works at the national level. Not just one city here or there. That seems to be just completely impractical.

Second, permits are required to purchase a gun.
Permits have several degrees which limit what kind of gun you can purchase.
You apply for a permit, after gathering the required paperwork, including a medical examination and an examination that certifies that you are fit to carry a weapon and insurance (for at least 100k€).It seems that some 80~90% of all applications for self-protection get refused - apparently, because the authorities understand that the people requiring these licenses are not really in need of such protection: http://www.tvi24.iol.pt/armas/civis/psp-...-de-defesa.
Permits need to be renewed every 5 years, they don't last forever. If your permit runs out, an official will ask you to return the weapon. You will get a compensation for that loss of property, of course.
When you die, your permit automatically runs out and your weapons can be confiscated from the heirs, unless they present a valid permit and deal with the ownership details.
This confiscation is in the form of a letter and you are the one who has to go to their premises and return the weapons, within some time period. Failure to do so leads to you being considered a criminal. The crime is possession of forbidden weapons. And that is a good way to have your home visited by the authorities.
All guns are registered in some central registry, just like cars. That's how the authorities know how many guns to confiscate.
Of course, all illegal guns are out of this loop.

Illegal weapons are confiscated without any compensation when they are spotted by the authorities and possibly destroyed.

The commies love that plan.