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The Shiv Sena is a right-wing, Marathi regionalist political party predominantly active in Maharashtra, India. Founded in 1966 by Bal Thackeray, the party's ideology is centred on the promotion of Marathi identity and the protection of local interests. Over the years, the Shiv Sena has become known for its strong stance on issues such as Hindu nationalism, regional autonomy, and opposition to immigration from other parts of India.