The wheel was turning full circle: having rejected Jacobinism in favour of a social revolution, the Populists were now returning to the Jacobin methods of conspiracy, terrorism and coups in the name of the people. The writings of Petr Tkachev marked the crucial watershed. They formed a bridge between the Jacobin tradition of Nechaev, the classic Populist tradition of Land and Liberty, and the Marxist tradition of Lenin. The Bolshevik leader owed more to Tkachev than to any other single Russian theorist. Born in 1844 into a minor gentry family, Tkachev had spent several years in the Peter and Paul Fortress after being arrested for his role in the student strikes of 1861. During the late 1860s he had fallen under Nechaev's spell — for which he spent another term in jail, followed by exile in Switzerland. It was there that, albeit crudely, he began to adopt the sociology of Marx, which led him away from Populism. In the mid-1870s he developed a violent critique of the 'To the People' movement. He claimed that propaganda could not bring about a revolution because the laws of social progress (to which Russia, like the rest of Europe, was subordinate) meant that the richer peasants would always support the regime. He argued instead for a seizure of power by the revolutionary vanguard, which would then set up a dictatorship and begin the construction of socialism. Tkachev claimed that the time was ripe for this putsch, which should take place as soon as possible, since as yet there was no real social force prepared to side with the government but there would soon be with the development of capitalism and the bourgeoisie. In a passage which Lenin was to echo in October 1917, Tkachev raised the battlecry: 'This is why we cannot wait. This is why we claim that a revolution is indispensable, and indispensable now,
Returning to the methods of the Jacobins, however, meant that the Populists, like their predecessors, were forced to engage in a hopeless war against the tsarist police state. A vicious cycle started of increasing repression by the police and counter-terror by the Populists. The turning point came in 1878, when Vera Zasulich, one of the leaders of Land and Liberty, shot and wounded General F. F. Trepov, the Governor of St Petersburg, as a reprisal for his order to have a student prisoner flogged who — in a typical gesture of defiance — had refused to take off his hat in the Governor's presence. Zasulich was hailed
as a martyr for justice by the democratic intelligentsia, and was acquitted by a liberal court. This was the signal for a wave of terror, whose aim was to undermine the autocracy and to force it to make political concessions. Two provincial governors were killed. Six failed attempts were made on the Tsar, including a bomb on the imperial train and a huge explosion in the Winter Palace. Finally, on I March 1881, as Alexander was driving in his carriage through St Petersburg, he was killed by a bomb.