 Many future Maximalists had been involved in such attacks, as well as in 'expropriations' (bank robberies and the like).Such methods had always been controversial in the PSR and were discontinued after Yevno Azef, head of the PSR's 'Combat Organization', was unmasked as a secret police agent.The Maximalists, however, argued for a continuation of 'political terror' and also endorsed 'economic terror', meaning attacks on factory bosses, industrialists, bankers, landowners, etc., or their property.