Specific details of what triggered the massacre are debated. According to some accounts, Yellow Bird began to perform the Ghost Dance, telling the Lakota the falsehood that their "ghost shirts" were "bulletproof". As tensions mounted, Black Coyote refused to give up his rifle; he spoke no English and was deaf, and had not understood the order. Another Indian said: "Black Coyote is deaf," and when the soldier persisted, he said, "Stop. He cannot hear your orders." At that moment, two soldiers seized Black Coyote from behind, and (allegedly) in the struggle, his rifle discharged. At the same moment, Yellow Bird threw some dust into the air, and approximately five young Lakota men with concealed weapons threw aside their blankets and fired their rifles at Troop K of the 7th. After this initial exchange, the firing became indiscriminate.