The Communist Party of Indonesia (Indonesian: "Partai Komunis Indonesia", PKI) was a communist party in Indonesia during the mid-20th century. It was the largest non-ruling communist party in the world before its brutal and violent eradication in 1965 and ban the following year. The party had two million members in the 1955 elections, with 16 percent of the national vote and almost 30 percent of the vote in East Java. During most of the period immediately following independence until the eradication of the PKI in 1965, it was a legal party operating openly in the country.