Freedom Writers: Do it big or don't do it at all

I have recently watched a very interesting true story movie: Freedom Writers, inspired by Erin Guewella’s teaching concept in room 203, long beach state school. My friends highly recommended me to watch it. At first, I thought it’s another tears and emotional exploitative movie for business purpose, but then I watched it. It made me think, when someone decides to do social works, be it civil rights movement, political movement, human rights movement, he/she mostly finds herself a lone fighter. I personally think that if we assess it in mathematical figure, that lone fighter’s work is as good as nothing in the end. The question is how much change he/she will bring if there is no resource supporting him/her. It s not that I have anything against people who have good intention to do social works, I just think in my environment (most environment in fact) my idealism of what is right will end up worthless to fight for because I am a student, with no financial resources, political power or policy power. I am fed up at one point in my life caring about the poor or rights abuse, be it due to bureaucratic procedure (identity card, where the Chinese have to pay a lot of money in the past, or registering a claim in a court, where you have to pay) or due to circumstances (poverty or racism). I cannot change it; I end up spending more energy than cultivating the result.
I guess the following analogy best represent my view. In mathematics discipline, we recognize the concept of “fitting in” (pembulatan). For example, 7.0001 will be fit in as 7. As a lone fighter, I always ended up generating 0.0001 in whatever idealism I am trying to uphold. It ends up fit in 7. It just doesn’t count.
Think about it carefully, how much change can we bring when are lone fighters. We need support from 10,000 more people to have it counted as 8. It is just damn difficult to do so in self-centered growing community. It is naïve to think a person is willing to dedicate his whole life solely for racist or poverty fight. He has a career to think of, probably sisters or brothers to support or family to support. He will end up doing a meager work and that will only be fit in into 7. Of course, there are cases when these fight work, but they are circumstantial. A 1 in 1 million probability. Take example of Martin Luther King, a civil right activist. I think he is lucky because the political environment was resentment to black enslavement. What I am saying is that enslavement is too cruel and too blatant to be tolerated. There was an atmosphere of resentment in many part of the world against apartheid policy, which eased his work and he did not work alone!! However, for issue in between a thin line of right or wrong such as helping the poor (how much money we should donate or the oil distribution system), we end up shouting in the street like one stupid activist!! Do people up there listen or even consider? We have to acquire the power to change to policy, but the ominous circle is always how to climb that politics social ladder?
In the end, I think what I am trying to say is do I big or don’t do it at all, most of you will end will disappointed just like me. It just doesn’t count!