Leftist errors policy was pursued in Montenegro since August while its intensity was increased since September 1941. This extremist policy was pursued by the Partisans in Montenegro under the influence of Milovan Đilas and Moša Pijade. After the initial success of the Uprising in Montenegro communists seized control of almost all the territory of Montenegro and began to fight against their class enemies. The substantial percentage of population of Montenegro supported Chetniks because they were afraid of the "red terror". Despite instructions to minimize the revolutionary side of their policies, the leaders of Montenegrin Partisans introduced "Soviet elements" in the summer of 1941, during the Uprising in Montenegro, because they perceived the uprising as the first stage of the communist revolution. On 27 July 1941 the Communist command for Montenegro issued an order for establishment of courts-martial aimed against those who they perceived as fifth column ending their order with proclamation "Patriots, destroy fifth column and victory is ours!".