I think we should expect that the previous generation won't help us to build the world we would like to see, and we should use all the tools and knowledge we have to change the world, even if it's against the will, interests and "happiness" of the previous generation.
We must organize ourselves, vote, protest, communicate and build towards what we would like to see happening.
That doesn't mean we shouldn't try to "make the world better". It only means we have to think about what we are doing and stop believing that we know the solutions (or even the problems). Guess-and-check is the only way to learn things and all parts of that process (the guessing, the implementation, and the checking) are unreliable because of the unlimited contingency of the world. How can you measure the current if you can't step into the same river twice?
Anyway, the kind of utopian protest culture you're talking about is the exact opposite of what is called for. That culture is creating a generation of people who are shockingly easy to manipulate. And they will be manipulated.
I trust the younger generation to force us to change.