Sicarii: Guerilla action in Bible times

Imagine standing along a road in Jerusalem that had a row of crosses along the side for the purpose of putting men to a slow and painful death. Imagine if you knew that the man on the center cross of a group of three was completely innocent. Further imagine that on the cross on either side of that man had one of your two sons nailed thee to die a death more horrible than can be described, and you could do nothing! This is the fictional story of real life character from Bible times. How did it come to this and what was the final outcome?