ch ens . ▁A ▁blood ▁lib el ▁rum or , ▁according ▁to ▁which ▁the ▁Che ch ens ▁alleg edly ▁use ▁" Christ ian ▁blood ▁in ▁their ▁rit uals " ▁may ▁also ▁have ▁contributed ▁to ▁the ▁es cal ation ▁of ▁events . ▁The ▁ri ots ▁occurred ▁in ▁ 3 ▁cities ▁- ▁Len in og or sk , ▁U st - K amen og or sk ▁and ▁Z y ry an ov sk . ▁ ▁The ▁main ▁ri ots ▁took ▁place ▁on ▁April ▁ 1 0 , ▁ 1 9 5 1 , ▁in ▁the ▁Che chen - city ▁neighbourhood ▁of ▁Len in og or sk . ▁The ▁ri ots , ▁led ▁by ▁groups ▁of ▁am nest ied ▁crim inals ▁upon ▁the ▁Che chen ▁civ ili ans ▁led ▁to ▁the ▁death s ▁of ▁ 4 0 - 4 1 ▁people , ▁mainly ▁of ▁North ▁C au cas ian ▁orig ins . ▁Ar rest s ▁were ▁late ▁made ▁by ▁Soviet ▁authorities ▁on ▁initi ators ▁and ▁ 5 0 ▁people ▁from ▁among ▁the ▁crim inals ▁were ▁per sec uted ▁by ▁courts , ▁though ▁no ▁ri ot ▁leaders ▁were ▁identified . ▁ ▁See ▁also ▁A ard akh ▁Eth nic ▁violence ▁R ac ism ▁in ▁Russia ▁ 1 9 5 8 ▁Gro z ny ▁ri ots ▁ ▁References ▁ ▁Category : 1 9 5 1 ▁in ▁the ▁Soviet ▁Union ▁Category : Ant i - C au cas us ▁sentiment ▁Category : History ▁of ▁Che ch ny a ▁Category : History ▁of ▁the ▁Soviet ▁Union ▁Category : 1 9 5