Australia implemented &quot;a massive buyback of more than 600,000 semi-automatic shotguns and rifles, or about one-fifth of all firearms in circulation in Australia.&quot; Also, gun buyers must &quot;present a &#x27;genuine reason&#x27; for needing each weapon at the time of the purchase. (Self-defense did not count.)&quot; Given that 80% of the guns were still in circulation, how do you defend yourself from them without a gun?<p>Quotes from <a href="http:&#x2F;&#x2F;www.slate.com&#x2F;blogs&#x2F;crime&#x2F;2012&#x2F;12&#x2F;16&#x2F;gun_control_after_connecticut_shooting_could_australia_s_laws_provide_a.html" rel="nofollow">http:&#x2F;&#x2F;www.slate.com&#x2F;blogs&#x2F;crime&#x2F;2012&#x2F;12&#x2F;16&#x2F;gun_control_afte...</a>