Complex sentence: This included overtly political, left-wing views, and criticisms of popular culture as'capitalist' mass culture; it absorbed some of the ideas of the Frankfurt School critique of the "culture industry" (i.e. mass culture).
Split into simpler sentences: This included overtly political left-wing views and criticisms of popular culture as'capitalist' mass culture. It absorbed some of the ideas of the Frankfurt School critique of the "culture industry" (i.e. mass culture).