Why Did the "Gang of Four" Limit Chairman Mao's Directives on Theoretical Questions to the Restriction of Bourgeois Rights?

At the end of 1974, the great leader and teacher Chairman Mao issued some important directives on theoretical questions. The purpose of these directives was to clarify to the people of the whole country the problem of bourgeois dictatorship. These directives explained in depth the necessity of tightly grasping the struggle between the proletariat and the bourgeoisie and between the socialist road and the capitalist road and firmly upholding the brilliant thought of the continuing revolution under the proletarian dictatorship in the socialist period. They pointed out in greater detail to the people of the whole country the direction of opposing and preventing revisionism, consolidating the proletarian dictatorship and building socialism.