Explanation:

The Gurdwara Reform Movement (Gurdwara Sudhar Lehr) is the Legislation passed by the Punjab Legislative Council which marked the culmination of the struggle of the Sikh people from 1920-1925 to wrest control of their places of worship from the mahants or priests into whose hands they had passed during the eighteenth century when the Khalsa were driven from their homes to seek safety in remote hills and deserts.
When they later established their sway in Punjab, the Sikhs rebuilt their shrines endowing them with large jagirs and estates. The management, however, remained with the priests, belonging mainly to the Udasi sect, who, after the advent of the British in 1849, began to consider the shrines and lands attached to them as their personal properties and to appropriating the income accruing from them to their private use. Some of them alienated or sold Gurudwara properties at will. They had introduced ceremonies which were anathema to orthodox Sikhs. Besides, there were complaints of immorality and even criminal behavior lodged against the worst of them. All these factors gave rise to what is known as the Gurudwara Reform movement during which the Sikhs peaceful protests were met with violence and death and ended with them courting arrest on a large scale to gain the world's attention.