Wikipedia
Chuhra
Chura or Bhanghi is a caste in India and a tribe in Pakistan. Populated regions include the Punjab region. Their traditional occupation is sweeping, a "polluting" occupation that caused them to be considered untouchables in the Hindu caste system.
Churas in Indian Punjab are largely followers of Sikhism. A small minority practice Valmikism, an offshoot form of mainstream Hinduism which still incorporates elements of Sikhism in its practices. In Pakistani Punjab 90-95% of its Christian population are from the Chura caste.