Purpose = the concrete or abstract results in the best readers if the paper succeeds in changing their minds.
Gun ownership, or burglary or self-defense laws could be changed
Gun owners or potential criminals could be educated
Police procedures could be changed
Store owners' security systems could be changed
Newspapers could change the way they report violent crime stories
Changed attitudes toward other issues in which personal rights clash with issues of social justice
Better planning by people in business and government to prevent individuals' suffering and loss
Citizenry changes its attitude toward violence, the socio-economics of crime, etc.