The revolution tipped the scales in Semenov's favour. The old power structure upon which Maliutin had depended, of the volost elder, the local police and the gentry land captain, was dismantled overnight. Within the village the voice of the younger and more progressive farmers was also becoming more dominant, while that of the old patriarchal leaders like Maliutin, who saw nothing good in the revolution, was increasingly ignored. As a champion of reform, Semenov became a dominant figure at the village assembly. He always spoke out against the old patriarchal order and the influence of the Church. In 1917 he helped to organize the land redivision in Andreevskoe, cutting down Maliutin's farm to half its size. He was active in both the district Soviet land department and the local co-operatives; established associations for the purchase of advanced tools, market gardening, improved dairy farming and flax cultivation; wrote pamphlets and gave lectures on agronomy; campaigned against alcoholism; set up a school and a library in the village; and even wrote plays for the 'people's theatre' which he had established with his schoolteacher friend in the nearby
township of Bukholovo. He even drew up plans on how to cover the villages of Volokolamsk with electric and telephone cables which he sent to the Moscow Soviet. Although Semenov's Tolstoyan beliefs prevented him from taking up office in the village or the volost Soviet, there was no doubt, as one local put it, 'that the peasants, not just of Andreevskoe, but of the whole region as well, saw him as their leader and champion'.
Meanwhile, Maliutin and his fellow elders continued to oppose his every move. They claimed that he was a Communist — and that his reforms in the village had merely brought upon it all the evils of the new regime. The local priest accused him of sorcery, and warned that his 'atheism' would lead to the devil. Archdeacon Tsvetkov of Volokolamsk joined in the denunciations, claiming that Semenov was the Antichrist. The new village school, organized by Semenov in 1919, enraged them especially, since it was built from timber taken from the woods that had belonged to Maliutin and the Church before they had been nationalized. Moreover, the school had no religious instruction. In place of the cross on the classroom wall there was the obligatory portrait of Lenin. One night Semenov's barn was burnt; on another his farm tools were taken and sunk in the lake. Anonymous denunciations were sent to the local Cheka claiming that Semenov was a 'counter-revolutionary' and a 'German spy': on more than one occasion Semenov was hauled in by the Cheka to answer for his actions, although a brief call to Kamenev, the Chairman of the Moscow Soviet, whom Semenov vaguely knew, was always enough to release him. During 1921, when Russia was hit by various cattle epidemics, Maliutin and his allies blamed the death of the livestock in the village on Semenov's 'evil reforms'. It was even claimed that he had 'made the cattle ill by sorcery'. Some of the peasants now became confused. Although they knew that throughout Russia cattle were dying from similar diseases, they wanted explanations for their own losses, and some now became suspicious of Semenov.
In the end, Maliutin organized his old rival's murder. On the night of 15 December 1922, as he was walking to Bukholovo, Semenov was ambushed by several men, including two of Maliutin's sons, who suddenly appeared from their sister Vera's house on the edge of the village. One of them shot Semenov in the back. As he turned to face his attackers they fired several more shots, and then, as he lay dead on the ground, blew off his face. They cut the blood-red sign of a cross into his chest.
It had been a cowardly murder. Semenov had always faced his rivals openly and had been fair to their points of view; yet they maligned him and shot him in the back. Later, when the murderers were arrested, they claimed that Semenov had been 'working for the devil' and that he had conjured up the cattle plague. They also confessed that Grigorii Maliutin and the Archdeacon Tsvetkov had ordered them to kill Semenov — 'in the name of God', as the
latter had told them. They were all convicted of conspiring to murder and sentenced to ten years of hard labour each in the Arctic north.