To clarify everybody hate ninjas. But as usual there is always rules to let it slide.
the general rule of blizzard internment is : Under master loot, no actions will be taken against the offenders.
So word of warning, never raid under master loot if you don't know the people.
Blizzard will not take any actions against it, and in essence promote the loot master ninjas.
This was confirmed by none the less 4 different GMs, when as they say " moral doesn't matter in some cases"
So be stress free and be careful of where and what you are putting yourself into.
Sources from difference realms, all over wow community