^I agree with you there. However, your last sentence, I believe is an attitude harboured by a lot of us; that we can't fight against the 'system' or change it, or don't know how to 'lead a revolution'. I don't like it, but I do adhere to it pretty much unfortuntately.
However, there are 'wholesale' ways for humans to affect change; there are many examples, and this is merely intended as such, and not an attempt to change anyone- but if mass farming of animals was ceased, there would be many downstream 'positive' effects, such as decrease in methane in the atmosphere, less land deforested to grow crops to feed these animals, less land needed for the animals themselves and less energy expended in the entire process of growing, feeding, transporting, slaughtering and distribution. I am aware that there would also be many negative effects of course; loss of emplyment and income for millions of people worldwide being the major one. As said, that was just an example- a similar argument could be put forth for removing all cars from the roads or somesuch.
The idea of fighting whaling or deforestation etc. is highly appealing to someone such as I, but I am still infused with 'youthful idealism' which I don't want to lose in a hurry, though it serves little function but to agitate me. That is actual ACTION which does change the physical universe- in a minor, perhaps insignificant way, but I think that in the coming years, the more acts borne out of compassion and not just their perceived usefullness, the better. There really doesn't need to be a reason to affect change except what emerges from it.
Its realtively impossible though, to indoctrinate, for want of abeterrt term, an entire planet of individuals, unless force was used, which is effectively the system in place now. The lack of unity on the planet is probably the worst symptom of these times, and that lack could very well be our downfall. Though, I think with things like global warming, it seems that a real crisis is dawning for everything on this planet- if that doesn't unite people, then we are surely doomed. It would take only a change in heart for people to just get along; but apparently we will be forced to do so to survive. And that is idealistic at best.