An effective way to stop people shooting other people is to not let people routinely carry guns in the first place. This is especially necessary in countries where one section of the population regards another section of the population as useful only for target practice.
Saint Laika's
It is what it is. We are who we are.
Tragically, in some of those same countries, an idol has been erected called “The Second Amendment”, to which they sacrifice their children (esp. their darker children). All attempts to proclaim “it’s just an IDOL, pull it down!” has been met w/ near-violent denunciations, “Blasphemy against Our Greatest GOD Second Amendment!!!”