Radical militancy from the 1960s and '70s? Where has it all gone? It might be in some films, and on a few campuses in very small measure, for example, but what changed - in seeking to redress historical wrongs, and create social justice - especially via nonviolence?

I'd hypothesize consumerism has continued apace since the 1960s and 1970s, lessening the cultural politicalization of those times.

militant:
combative and aggressive in support of a political or social cause, and typically favoring extreme, violent, or confrontational methods:

radical:
(especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough:

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Students for a Democratic Society

https://en.wikipedia.org/wiki/Students_for_a_Democratic_Society

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Student activism

https://en.wikipedia.org/wiki/Student_activism

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The Revolution on America’s Campuses

http://time.com/4347099/college-campus-protests/

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The 1960s and Student Activism

http://hesburgh.nd.edu/fr-teds-life/the-notre-dame-president/the-60s-and-student-activism/

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THE 1960S
https://www.history.com/topics/1960s

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The Report of the President's Commission on-Campus Unrest.
https://files.eric.ed.gov/fulltext/ED083899.pdf

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1960s

https://exhibits.stanford.edu/stanford-stories/feature/1960s

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The Sit-Ins of 1960
http://www.crmvet.org/info/sitins.pdf

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From Sit-Ins to SNCC: The Student Civil Rights Movement in the 1960s

https://www.amazon.com/Sit-Ins-SNCC-Student-Rights-Movement/dp/0813049598

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The Sit-In Movement

http://www.ushistory.org/us/54d.asp

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Student Movements of the 1960s

https://www.georgiaencyclopedia.org/articles/history-archaeology/student-movements-1960s

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Columbia University protests of 1968

https://en.wikipedia.org/wiki/Columbia_University_protests_of_1968

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Greensboro sit-ins

https://en.wikipedia.org/wiki/Greensboro_sit-ins

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Sit-in

https://en.wikipedia.org/wiki/Sit-in

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1960s wiki subject at WUaS (in English only so far) -
http://worlduniversity.wikia.com/wiki/1960s

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Instead, let's head into MIT OCW-centric wiki education for 7.5 billion people in all ~200 countries' languages and in all 7,099 living languages - so free universal highest quality education - and explore informing an universal basic income with cryptocurrency with blockchain ledger as well.

https://wiki.worlduniversityandschool.org/wiki/Nation_States