For the most part, Russian sailors welcomed the Russian Revolution of 1917, in which they participated. Earlier, in 1905, sailors of the battleship "Potemkin" in the Black Sea Navy revolted. In 1906 rebellious soldiers gained control of some Helsinki coastal fortifications during events known as the Viapori Rebellion, which was subsequently put down, following bombardments from ships of the Baltic Fleet which remained loyal to the Tsarist government. The first ship of the Soviet Navy could be considered to be the rebellious cruiser "Avrora", whose blank shot from its forecastle gun signaled the October Revolution according to Soviet narratives. In March 1921, the sailors of Kronshtadt rebelled against the Bolsheviks, demanding freedom of speech and closing of concentration camps, but this belated revolt was ruthlessly suppressed by Leon Trotsky.