Most of those “mass shootings” are gang violence, and when a shooter gets taken out by another shooter it’s just part of the violence.

The mass shootings where the point is a massacre have a slightly better rate of “good guys with guns,” but still admittedly not great.

It’s completely irrelevant though, the point of the right to bear arms is so people can join a radical militia and help put down slave revolts, conquer land from the Indians, and fight tyranny, in the order of importance to the Founding Fathers.