The attitude that your species is destined, strong enough, chosen by the sky daddy or what ever reason, to rule everything that you encounter. It is the right of your people to conqueror, crush, and otherwise do what is necessary to make everyone else understand just how special your race really is. That is if you consider their feeble efforts to be the actions of people at all.
This attitude is constantly coming out of some world or another. And while it has worked temporarily in the past it always comes against something that doesn't recognize the right of the said natural rulers. Said thing then implacably schools them in the fact that there are no natural rulers of the Galaxy, be that force a supernova, a people stronger than the natural rulers, or simply the march of time.
Making such a claim is a sure way to get "that look" from a Starfleet Captain. They have seen it all before.