* Entrenched bias in AI hurts marginalised groups * Lower-caste and Indigenous groups missing from AI datasets * Skewed data entrenches rifts with Muslims and Dalits * Benefits of Big Tech flow mostly to rich By Rina Chandran Sept 11 (Thomson Reuters Foundation) – After communal clashes in Delhi's Jahangirpuri area last year, police said they used facial recognition technology to identify and arrest dozens of men, the second such instance after a more violent riot in the Indian capital in 2020. In both cases, most of those charged were Muslim, leading human rights groups and tech experts to criticise…