Mariano Melgarejo

Manuel Mariano Melgarejo Valencia (1818–1871) was the President of Bolivia from 28 December 1864 to 15 January 1871. He gained power in a coup d'etat and ruled with more incompetence than any Bolivian leader in his time. He ruthlessly suppressed opposition and assaulted the traditional rights of the country's indigenous population. He was deposed and later assassinated.