I just got beat up for the third time this year (2012) by completely random people for absolutely no legitimate reason (and the cops do not seem to have the legal right to do anything about it ever, for some reason). This time, like once before, I thought my life was in danger because I was downed and three guys were consistently attacking me, but I managed to get up and flee the scene (luckily).
If I were carrying a knife that I own, and it was 100% legal to carry (like a pocket knife or something), but I had no commercial reason to carry it (I'm not a carpenter, or anything--I am a student), could I legally use it in self-defence if, god forbid, the same situation were to repeat. And I do specifically mean: could I kill a person with my knife if I thought my life were in jeopardy at that very moment (obviously I would have to have bruises/injuries to prove it)?
Every time I've been beat up, it was from people clearly on drugs (so there was no reasoning with them), I was out numbered, and it might have been because I was simply walking by the wrong place at the wrong time.
[If possible, could you cite a legal source where I can read your proof for reasoning--I don't want people's personal opinion. This is SERIOUS]

