When New York's Journal News published an interactive map revealing the names and addresses of legal gun owners in Westchester and Rockland counties, their intent seems to have been to heap shame on those gun owners and direct public ire toward them as well. However, one other thing they unwittingly accomplished was letting criminals know which homeowners are unarmed and therefore, which homeowners could be sitting ducks.
Think about it: The release of a list of the homes of legal gun owners is simultaneously a hint at which homeowners are not gun owners.