The consequence of government disarming its citizens.
At Wounded Knee in 1890, the U.S. government killed an estimated 150 native Americans -- men, women and children.
That is the largest fatality count that the U.S. government has ever inflicted upon its citizens.
Second rank goes to the Branch Davidian massacre outside of Waco, TX, in 1993, when the U.S. government killed 76 native Americans -- men, women and children.