Often when I'm traveling around Azeroth, because I'm leveling archeology or farming some mats... I obviously come across a lot of people from the opposite faction, lower levels that are doing their quests and leveling. Very often I see them... well, reacting scared. They leave the questing area to go hide in the friendly camp near the guards while I'm doing my archeology or am skinning some mobs. Totally unnecessary because I do not gank lower level people anyhow... (unless they're trying to mine my nodes).
As consequence of my own behaviour ... I rarely run away from higher levels of the opposite faction either, when I'm leveling my own alts. I don't attack them and I don't expect them to gank lower levels easily either, and I must say... I've never ever in 8 years time had problems with this. I rarely ever get ganked or attacked by higher levels, we just ignore eachother and do our own thing.
What about you do? Do you run away when you see a higher level of the opposite faction?