On January 9, 1905 (Bloody Sunday) in St. Petersburg, around 150,000 lower-class Russian citizens peacefully demonstrated for better working and living conditions but were fired upon by the military, killing 40 people and injuring hundreds, which sparked further violent demonstrations and marked the beginning of the Russian Revolution. The revolution climaxed in October and September after Tsar Nicholas failed to take the uprising seriously and address citizens' grievances around unfair treatment by the nobility and corrupt government that taxed lower classes more with few benefits in return.