The Ottoman countercoup of 1909 (13 April 1909) was an attempt to dismantle the Second Constitutional Era of the Ottoman Empire and replace it with an autocracy under Sultan/Caliph Abdul Hamid II. Unfortunately for the advocates of representative parliamentary government, mutinous demonstrations by disenfranchised regimental officers broke out which led to the collapse of the Ottoman government. Characterized as a counterrevolution, chaos reigned briefly and several people were killed in the confusion.