World War II: The <a href="https://en.wikipedia.org/wiki/Lidice_massacre" id="mwAQI" rel="mw:WikiLink" title="Lidice massacre">Lidice massacre</a> is perpetrated as a reprisal for the assassination of <i id="mwAQM">Obergruppenführer</i> <a href="https://en.wikipedia.org/wiki/Reinhard_Heydrich" id="mwAQQ" rel="mw:WikiLink" title="Reinhard Heydrich">Reinhard Heydrich</a>.