<a href="https://en.wikipedia.org/wiki/Sniper" id="mw-A" rel="mw:WikiLink" title="Sniper">Snipers</a> fire upon left-wing <a href="https://en.wikipedia.org/wiki/Peronism" id="mw-Q" rel="mw:WikiLink" title="Peronism">Peronists</a> in <a href="https://en.wikipedia.org/wiki/Buenos_Aires" id="mw-g" rel="mw:WikiLink" title="Buenos Aires">Buenos Aires</a>, <a href="https://en.wikipedia.org/wiki/Argentina" id="mw-w" rel="mw:WikiLink" title="Argentina">Argentina</a>, in what is known as the <a href="https://en.wikipedia.org/wiki/Ezeiza_massacre" id="mw_A" rel="mw:WikiLink" title="Ezeiza massacre">Ezeiza massacre</a>. At least 13 are killed and more than 300 are injured.