Marcuse came up with the idea that in order to change (read - destroy) the existing order in the society, one has to attack the source of the "problem" (from his point of view) - the tolerance itself. He came up with the idea that in order to radicalize a minority and make them rally around a single cause, one has to dispense with any idea of tolerance to diverging views within that community, then keep pressing demands upon the mainstream society accusing them of intolerance, then escalating demands up to a point when the society begins firing back reverting from the tolerance into self-preservation mode, giving more opportunities to accusing the mainstream society of oppression. Eventually those accusations may turn out to be true, and a minority may have to pay a high price, however the main goal of the leftist radicals is not helping any minorities' causes - these are just their tools, but rather of destroying or destabilizing the society.
Last but not least. I believe that the Left, the Statism, Collectivism and all social manipulators will sooner or later fail here because Humans are wonderfully unpredictably disorganized, irreverend and noncompliant!
Other Links and References:
(watch from minute 33-37)
"A CRITIQUE OF PURE TOLERANCE", ROBERT PAUL WOLFF, BARRINGTON MOORE, JR., HERBERT MARCUSE, 1970
Dr. Ben Carson on Hillary Clinton's Saul Alinsky Letters: ‘We've Had These Kinds of Warnings Before'
"I'd Organize Hell" - Saul Alinsky TV interview 1966
TOLERANCJA REPRESYWNA HERBERTA MARCUSE [by Krzysztof Karoń, in Polish]
Po czym rozpoznać marksizm? Krzysztof Karoń [in Polish, "How to recognize Marxism"]
Note: above video essay is fascinating. The author is putting a thesis that marxists and socialists lost out because most of the working class people choose good work ethics and organic work leading to organic economic growth benefiting an entire society, over their proposed revolutionary path. To counter that trend, the Left decided to undercut and denigrate the organic growth and good work ethics by undermining the entire professional education system in the West. There is a lot more, very insightful presentation and well worth watching.
Grzegorz Kolodziej - Fragment dzisiejszej odpowiedzi... [Facebook, the main post is in Polish, the comments are in English]