Do you honestly think that there is no relationship between the
invention of a gun and mass killings?

No. A gun is a tool. I think there is a relationship between the
way our society treats people and mass killings. I think that
treating people like they are supposed to be taken care of by the
gov't instead of holding them responsible for anything really warps
peoples minds into thinking they are trapped and then they loose it.
Some people go on stress leave and a few go out and kill people. More
laws is not going to change that.