What harsh measures did Alexander III use to wipe out revolutionaries

Alexander III used a variety of aggressive tactics to wipe out revolutionaries. He encouraged fierce persecution of political dissidents and their families. Thousands were sent to Siberia as political exiles, while others suffered arrest and were sent to prison without trial. Alexander III also imposed strict censorship with the aim of preventing any revolutionary activity, and he initiated a rigorous program of Russification in which the native cultures and languages of the non-Russian tribes were forcibly replaced with the Russian language and culture. Taxation was increased and severe social and economic reforms were implemented, which had the effect of curtailing the civil unrest. Most totalitarian of all, though, was his secret police, the notorious Okhrana, which ruthlessly hunted down and often executed suspected revolutionaries.