<a href="https://en.wikipedia.org/wiki/Hungerford_massacre" id="mwAUU" rel="mw:WikiLink" title="Hungerford massacre">Hungerford massacre</a>: In the United Kingdom, Michael Ryan kills sixteen people with a <a href="https://en.wikipedia.org/wiki/Semi-automatic_rifle" id="mwAUY" rel="mw:WikiLink" title="Semi-automatic rifle">semi-automatic rifle</a> and then commits suicide.