 In the 1950s, Singh entered politics when he started supporting the concept of "Punjabi Suba", a separate state for the Punjabi speakers in India.By the late 1950s, Fateh Singh had become the senior vice-president of the Shiromani Akali Dal, and had led several marches supporting the Punjabi Suba movement.On 18 December 1960, he started a fast-unto-death in support of his demand.