The proscriptions are widely perceived as a response to similar killings which Marius and Cinna had implemented while they controlled the Republic during Sulla's absence. Proscribing or outlawing every one of those whom he perceived to have acted against the best interests of the Republic while he was in the East, Sulla ordered some 1,500 nobles ("i.e.," senators and equites) executed, although it is estimated that as many as 9,000 people were killed. The purge went on for several months. Helping or sheltering a proscribed person was punishable by death, while killing a proscribed person was rewarded. Family members of the proscribed were not excluded from punishment, and slaves were not excluded from rewards. As a result, "husbands were butchered in the arms of their wives, sons in the arms of their mothers". The majority of the proscribed had not been enemies of Sulla, but instead were killed for their property, which was confiscated and auctioned off. The proceeds from auctioned property more than made up for the cost of rewarding those who killed the proscribed, making Sulla even wealthier. Possibly to protect himself from future political retribution, Sulla had the sons and grandsons of the proscribed banned from running for political office, a restriction not removed for over 30 years.