No need to do personal attacks here m8 Remember, you are the odd player out here
You might see it as unethical, but i do not. Normally, i did this ganking on a PVE server, where i made my low lvl friends turn on pvp, just to lure some people to attack them and then i would come in and kill them as a max lvl player It only lasted for 5 min, but it was fun to see some people try to get around a 5 man group of lvl 70s.
But again, you are on pvp server. Every pvp action, that is made in the game, is done with permission from Blizzard. There are safezones and LFD, for players, who don't like this ganking method, but that is how things are in the end. So, start living with other people ganking you or play on PVE server. You have played on a PVP server for some time, so i am a bit stunned, that you only experience this kind of behavier now.