I want to be a hero...and save people.?

I am 16 years old... I've been feeling kind of depressed about everything. They way the world is, they way people treat other people. I've come to the conclusion that I am ultimately disappointed with the world and all the bad people in it. I want to save those who need it, whether they are good or bad. I obviously wouldn't be able to choose who I save, although I would tie up the ones who need to be punished for the authorities or something. But, vigilantism is illegal and I would hate to have to constantly have to look over my shoulder waiting to be arrested. But, there are rules authorities have to follow. A vigilante, would not have to follow any to save those who need to be saved. I could be a spy/hero. Lurking around with a camera maybe recording what the guy does before stepping in. People need and deserve a hero... they need help and I just wish to God I could do something. People getting d, murdered and tortured... police can't do anything without evidence. Government doesn't care. I do... Is there anything I can do to be what I want? I keep having this recurring dream. I am wearing all black leather. Pants, boots jacket with a black motorcycle helmet with a solid black visor. I a weaving through traffic on a BMW bike and it jumps to me getting thrown out of the third story of a building by an explosion caused by a fire... I died..Right, before I woke up there was a little kid in the back of an ambulance. Now, I know this is probably irrelevant to what I am asking... But, I'm curious. Do any dream interpreters know what this means?