Targetting is somebody encountering you in multiple games and chasing you and only you for the sole purpose of ruining your game. I don't mean to come off rude, but if you're not a staff member, VIP, or mapmaker you have little right to be complaining about rank specific targetting or asking for a rule change. In most cases, it's usually just because somebody is under the impression that its worth it to chase you for your gear, or because they just don't quite understand the game.
Even as a moderator I'm hardly targetted, although it is really annoying when people do target you off spawn and then trashtalk when they kill you. I can relate, and I do promise that we're working on a more efficient way to deal with trashtalk.