The correct statement are: "The sign advertising watches for sale shows support for capitalism, not communism. - The communists inserted signs and banners that implied strong public support for their goal of overthrowing the tsar."
Communist propaganda in the Soviet Union relied extensively on the Marxist-Leninist ideology to promote the line of the Communist Party. In societies with widespread censorship, propaganda was omnipresent and vigorously reinforced. Penetrated even in the social and natural sciences giving rise to various pseudoscientific theories such as Lysenkoism, while the fields of real knowledge, such as genetics, cybernetics and comparative linguistics, were condemned and banned as "bourgeois pseudoscience". With "the repressed truths, the falsehoods in each field were incessantly rubbed in the printing, in interminable meetings, in the school, in mass demonstrations, on the radio".