This is all about gun control. The Constitution does not address limitation on ownership of guns. Therefore I believe there should no limitations on gun ownership. It is common sense to restrict the ownership of guns by those who commit felonies or violent misdemeanors. But other than that, all citizen should have the freedom to purchase guns. The mentally ill poses a separate problem, that should require cooperation between the police and psychiatrist. Either a court appointed psychiatrist or a patient's doctor who feels he/she pose a danger to the public.