Criminals sit jam-packed in a filthy Indian holding cell. The smell of urine permeates the dank air.  Two bedraggled men in the corner stand out — not because of their threadbare clothes or clean-cut features but because of their actions. Pabitra Kata hums a hymn while Niladri Kanhar prays.  Their alleged crime: “proselytizing,” trying to convert others to their religion.…