Gun permit process in NY could include social media check

Among the requirements: Applicants would have to show they have “the essential character, temperament and judgment necessary to be entrusted with a weapon and to use it only in a manner that does not endanger oneself and others,” according to the bill.

And as part of that assessment of good character, the bill says, applicants would have to turn over a list of any social media accounts they have had in the past three years “to confirm the information regarding the applicant's character and conduct.”

Ok, I'm curious:

how many killings would this kind of check have prevented in the past?

What does the data say?