You might be a gun owner — even if you don’t possess a weapon

You probably are a gun owner.

You might not actually possess a gun. But if you have a pension or a 401(k) or an investment in index funds, there is a good chance that, directly or indirectly, you own shares of one or more gun manufacturers.

Like it or not, that means that your financial incentives are at least partly aligned with those of gunmakers. And in general, the more guns they sell, the more money their shareholders — in other words, you — make.

The school shooting last month that killed 17 people in Parkland, Fla.