I have a level 60 horde rogue on elysium pvp.
I gank lowbies at all levels when it's convenient. If they run away and it takes me longer than 30 seconds to chase then I generally let you go.
Sometimes I make exceptions, I.e. if you try really hard to get away and you're clearly pleased with yourself, or if you don't bend the knee, I kill you. Depends on my mood. Like a real dictator.
Its a power trip that is insanely fun. Also, after I hit the 30+ lowbie body count (usually in red ridge) and I pop that blade fury and about 10 Alli die around me at the same time, the hilarious tears start flowing and I literally can't stop laughing.
They cry and summon their 60 friends. I kill them too. If there's too many I ask my friends to come and before you know it, we have legit world pvp occurring.
It all comes full circle.