If you've been alive for almost ninety years, you could gain perspective about activism.
(An interviewer asked Noam Chomsky if humanity had progressed during Chomsky's lifetime)
There have been enormous changes. Just look here at MIT. Take a walk down the hall and take a look at the nature of the student body: it’s about half women, a third minorities, informally dressed, casual relations among people and so on. When I got here in 1955, if you’d walk down the same hall it would have been white males, jackets and ties, very polite, obedient, not posing many questions. That’s a huge change.
And it’s not just here — it’s all over the place. You and I wouldn’t have looked like this, and in fact you probably wouldn’t be here. Those are some of the cultural and social changes that have taken place thanks to committed and dedicated activism.
Other things have not, like the labor movement, which has been under severe attack all throughout American history and particularly since the early 1950s. It has been seriously weakened: in the private sector it’s marginal, and it’s now being attacked in the public sector. That’s a regression.
The neoliberal policies are certainly a regression. For the majority of the population in the US, there’s been pretty much stagnation and decline in the last generation. And not because of any economic laws. These are policies. Just as austerity in Europe is not an economic necessity — in fact, it’s economic nonsense. But it’s a policy decision undertaken by the designers for their own purposes. I think basically it’s a kind of class war, and it can be resisted, but it’s not easy. History doesn’t go in a straight line.
https://www.jacobinmag.com/2015/09/noam-chomsky-bernie-sanders-greece-tsipras-grexit-austerity-neoliberalism-protest/
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Merrily, you just don't understand. 
He's pushing 90. Cut him some slack. 