French troops invade the <a href="https://en.wikipedia.org/wiki/Paris_Commune" id="mwqw" rel="mw:WikiLink" title="Paris Commune">Paris Commune</a> and engage its residents in street fighting. By the close of "<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Bloody_Week" id="mwrA" rel="mw:WikiLink" title="Bloody Week">Bloody Week</a>", some 20,000 <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Communard" id="mwrQ" rel="mw:WikiLink" title="Communard">communards</a> have been killed and 38,000 arrested.