How did Gen X/Millennials failed at tackling the political issues they criticised in the 90's

In the 90's a lot of popular song were pretty political, remember Killing in the name of and even the skate pop-punk has pretty popular political song's (Offspring, Blink Green-day). Actually political movies were also quite big in the 90's/00's (French Masterpiece La haine, or the whole work of Michael Moore).

I would expect to see that the people who were teens/young adult at the time would tackle all these issues 20-30 years latter when they'll finally take the power and the reality is that everything got worse, than even talking about-it make you sound like a radical, and that the gen-X/Millennials totally failed to change something.

What happened ? and how did we fail ?