TheVoiceOfJoyce Gun violence studied in America, pre dating today’s mass murders, conclusion; Americans have too many guns and an easy access to them. Americans as of 2012 were 4.4% of the World’s population and owned 42% of the World’s guns. Americans were also 31 % of gunmen in mass shootings. You can discount mental instability, men have more access to guns. When men are angry they shoot. I haven’t seen an American woman mass murderer, yet, have you?