One result of the public outcry against the ubiquitous presence of Imperial Russia in Persia was the Constitutionalist movement of Gilan, which followed up the Persian Constitutional Revolution. Many participants of the revolution were Iranians educated in the Caucasus, direct émigrés (also called Caucasian muhajirs) from the Caucasus, as well as Armenians that at the same period were busy with establishing the Dashnaktsutyun party as well as operations directed against the neighboring Ottoman Empire. The rebellion in Gilan, headed by Mirza Kuchak Khan led to an eventual confrontation between the Iranian rebels and the Russian army, but was disrupted with the October Revolution in 1917.