 Complete the following phrase:  Lebed had a problematic history with respect to human rights. He had demonstrated that he personally regarded violence to be a means of persuasion, and had acted accordingly while a general. In the years leading up to the dissolution of the Soviet Union, Lebed was involved in military efforts to suppress ethnic unrest. This included, in the spring of 1989, an effort to quash unrest in Georgia in which more than twenty people were killed and dozens wounded when spetsnaz troops commanded by Lebed used sapper shovels and chemical weapons on crowds. 