The fury of the bourgeoisie against this independent and omnipotent (because it was all—embracing) organisation of the oppressed
; ethe fight, the unscrupulous, self—seeking and sordid fight, the bourgoisie waged against the Soviets; and, lastly, the overt participation of the bourgeoisie (from the Cadets to the Right Socialist—Revolutionaries, from Milyukov to Kerensky) in the Kornilov mutiny — all this paved the way for the formal exclusion of the bourgeoisie from the Soviets."
http://en.wikipedia.org/wiki/Soviet_(council)#cite_note-5I'd like to know what role the underlined, semicolon-encapsulated sentence plays in the text.
Thank you in advance for your help.