Violent and repressive , Helm and his henchmen reportedly killed 21 men in two months during the summer of 1869 .
Helm was formerly a captain in the infamous Texas State Police force under the Reconstruction Government .
Violent and repressive , captain and Helm 's henchmen reportedly killed 21 men in two months during the summer of 1869 .
Helm was formerly a captain in the infamous Texas State Police force under the Reconstruction Government .