In 1919, the European population in Punjab feared the locals would overthrow British rule. A nationwide hartal (strike action), which was called on 30 March (later changed to 6 April) by Mahatma Gandhi, had turned violent in some areas. Authorities were also becoming concerned by displays of Hindu-Muslim unity. Sir Michael O'Dwyer, the Lieutenant-Governor of Punjab, decided to deport major agitators from the province. One of those targeted was Dr. Satyapal, a Hindu who had served with the Royal Army Medical Corps during the First World War. He advocated non-violent civil disobedience and was forbidden by the authorities to speak publicly. Another agitator was Dr. Saifuddin Kitchlew, a Muslim barrister who wanted political change and also preached non-violence. The district magistrate, acting on orders from the Punjab government, had the two leaders arrested.