Derek Thompson's excellent and informative podcast Plain English details the four obstacles that impede any solution to the proliferation of guns and-- thus-- gun violence and mass shootings in America:
1) money . . . many politicians are in the pocket of the NRA and guns are big business;
2) cynical love of power . . . some politicians will do and say whatever is necessary to gain votes-- even if it's detrimental to our country;
3) the Second Amendment, fear of government overreach, the desire for freedom and liberty, and the ability to fight oppressors;
4) a genuine love of guns and a genuine gun culture-- this is the hardest one for many people to understand, but there is a whole nation of people out there that love guns-- they love the feel of the metal in their hand, they love shooting, they love talking about guns and buying guns and going places with other people with guns . . . and I think they think of guns the way other people think of cars or video games or whiskey . . . they love these things despite knowing that there are harmful consequences and externalities . . .
these are formidable obstacles and so it seems to me (and the podcast espouses this) that because there is a correlation between gun prevalence and gun violence, the only way to tackle the problem is statistically-- it has to be the same as cigarettes, which are still legal but stigmatized to the point where they aren't as prevalent as they once were . . . so little laws, little taxes, licensing requirements, background checks, etcetera . . . anything to reduce the number of guns will reduce the violence . . . but it's never going away . . . but it could get better-- cars are safer now and technology will make them less and less prone to crashing and perhaps we'll need similar technological solutions to deal with guns.