Ok, so I know there are pickpockets who you tackle to get your money back, and there are corrupt officials who you kill to decrease your notoriety, but there is a third type of guy with a white arrow over his head.
Who are the well-dressed men who freak out and bolt when they see Ezio, basically screaming back, "Stay back, vile assassino!"? They're not corrupt officials because killing them brings my notoriety up by like 50%, even if they are killed lo-pro, alone on a rooftop. But they are not civilians, because I don't get a warning for killing them. Also, they are quite rich. They carry about 1500 florins on their corpses.
Are they Templars or what? What's their function gameplay-wise, besides being a worthy hunt to chase, kill, and loot?