RKMBs Forums .::Important::. Politics and Current Events My Next Door Neighbor Is A Drug Dealer

Yes, you should definately report him, and doing this you might even save him from getting shot by more aggressive dealers, or saving him from other kinds of trouble.
But first and foremost you´ll be saving yourself and your neighboors from trouble.
Sure he might be a nice guy, some massmurderers are really nice guys, but they are still criminals.