Your grandfather was a wise man, obviously; however, that same logic could be applied to justifying the need to take justice into one's hands. And no one is perfect, and yes the justice system could be claimed to make a few mistakes here or there; however, when they blatantly do not care, when they're corrupted and bought out by the billionaires that run them, then you have to wonder if it's just an imperfect humanity, of if there's a true evil in our system.
Oh, don't worry. I'm fine... at least I like to think I am. Stuff's happening, but it's just dream related. Nothing important.