INCONVENIENT FACT: Countries that allow private gun ownership have much lower overall murder, suicide and violent crime rates than countries with pervasive gun control laws.
EVIDENCE: According to no less an authority than the peer-reviewed Harvard Journal of Law & Public Policy, countries with stringent gun control laws have higher murder and suicide rates than those without.
DOCUMENTATION: "Would Banning Firearms Reduce Murder and Suicide?" A Review of International and Some Domestic Evidence by Don B. Kates and Gary Mauser, Volume 30, Number 2 of the Harvard Journal of Law & Public Policy, pages 649-694. (To download a PDF copy of the journal article, simply Google the title. It is available on the web free of charge.)