<a href="https://en.wikipedia.org/wiki/Direct_Action_Day" id="mwASI" rel="mw:WikiLink" title="Direct Action Day">Mass riots</a> in <a href="https://en.wikipedia.org/wiki/Kolkata" id="mwASM" rel="mw:WikiLink" title="Kolkata">Kolkata</a> begin; more than 4,000 people would be killed in 72 hours.