The 'Bloody Sunday' massacre: On Sunday, 22nd January 1905, thousands of unarmed demonstrators marched to Nicholas II's Winter Palace in St Petersburg to present a petition about their poor living standards and working conditions. The demonstrators were indiscriminately fired upon by the Imperial Guards, killing more than a thousand. This organised massacre in broad daylight, which is often called the 'Bloody Sunday,' infuriated the people, and one of then defining incidents that led to increasing revolt against the Tsar, and ultimately resulted in the October revolution 12 years later. (Photo | Twitter/Past or Prologue)