Lenin: We know that the opportunists, slaves to the ideas of liberalism, understood these profound words of Marx incorrectly and tried to put a distorted interpretation on them. Among the opportunists there were, for instance, the Economists, the elder brothers of the liquidators. The Economists believed that any clash between classes was a political struggle. The Economists therefore recognised as "class struggle" the struggle for a wage increase of five kopeks on the ruble, and refused to recognise a higher, more developed, nation-wide class struggle, the struggle for political aims. The Economists, therefore, recognised the embryonic class struggle but did not recognise it in its developed form. The Economists recognised, in other words, only that part of the class struggle that was more tolerable to the liberal bourgeoisie, they refused to go farther than the liberals, they refused to recognise the higher form of class struggle that is unacceptable to the liberals. By so doing, the Economists became liberal workers' politicians. By so doing, the Economists rejected the Marxist, revolutionary conception of the class struggle. https://wordsmith.social/protestation/quotes#quote9151