Damn dude just chill out. The only time you need to show someone what's up is when they cross that line. Until then, just coexist with everyone and live a balanced, harmonious life.
IF you are threatened, I think legally you have the right to take the first move, beat them to a pulp. Dont stand there and try to be the nice guy, because trust me that wont last for long. Beating up everyone who annoys you gets tiring too, but thats just a phase in everyone's life too.
