If I kill someone, I don't because I'm afraid of someone. I do it because it's an Alliance ****; 99.99999999% chance they would do the same to me. Not only does red=dead, but also, I need to kill them before they lay eggs.
I'll "strike you down" regardless of your health or if you're attacking a mob. If you're anything but level 80, you're probably going to die in 3 hits or less anyway. And if you're level 80, you're probably going to get rekt there too.
It's a pvp realm. And if I see you in an active pvp zone, I feel absolutely no remorse for you. STV? Blasted Lands? Tanaris? Ungoro? Hellfire? Yeah, you're probably going to die. Anywhere else? I might have mercy, depends on my mood.
Earlier today, I stood up to 40 VIRTUS members by myself, died, and moved on. If I can do that, then you can do the same. Stop complaining and go play the game.