I guess I must step down in order for these riots to cease
A group of citizens went to the palace to protest against internment and the guards opened fired on the group, resulting in hundreds of unarmed civilian casulties. Happened prior to the revolutions of 1917.
Due to the widespread protests/riots Tsar Nicholas II was forced to abdicate the throne.
Vladimir Lenin and Joseph Stalin lead the bolshevicks in a (successful) revolution against the provisional government. They made a point to make it as bloodless as possible.