"to escape the mounted gendarmes who were quelling the First Revolution (1905-06) "

The 'First Revolution' was the Revolution of 1905, which coincided with the end of the Russo-Japanese war of 1904-5. The uprising on the Battleship Potemkin, of the Imperial Russian Navy's Black Sea Fleet in June 1905 was a watershed for the revolutionary movement, and was commemorated by Sergei Eisenstein in his film The Battleship Potemkin. The mass strikes, uprisings, and rise in terrorism that swept the Russian empire from 1904 led to the establishment of the State Duma of the Russian Empire, a multi-party system, a limited constitutional monarchy, and the Russian constitution of 1906.