The Japanese suppressed the movement with brutal force. Christian leaders were nailed to wooden crosses and were left to die a slow death ? "so that they can go to heaven". Mounted police beheaded young school children. The police burned down churches. The official Japanese count of casualties include 553 killed, 1,409 injured, and 12,522 arrested, but the Korean and neutral estimates are much higher: over 7,500 killed, about 15,000 injured, and 45,000 arrested