A Sikh preacher died Monday after being wounded in an attack on his temple by a group of fundamentalist Sikhs armed with knives and a handgun, police said. India's prime minister appealed for calm as riots protesting the deadly shooting spread to several northern Indian cities.Witnesses said the Vienna temple attended by lower-caste Sikhs had been attacked by Sikhs from a higher caste who accused one or both of the preachers of being disrespectful of the religion's Holy Book...

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