Like in previous class societies, under capitalism too people are divided into big groups, i.e. classes, according to the position that they hold in the social production system, to their relationship to the means of production, to their roles in the social organisation of labour; hence to the size of their shares that they acquire from the social wealth. In the capitalist society, the petty-bourgeoisie constitutes an intermediate class which is squeezed between the two fundamental classes of the society, the bourgeoisie and the proletariat. In the scientific sense, petty-bourgeoisie...