I think many see the INFJ as unassertive and painfully shy in the stereo-typical sense of the general description and just assume all or most INFJs are that way. Kind of strange for many to put that stereo-type on INFJs but also have that label of "The Protector". I don't see most INFJs in that stereo-type as many others do.
Then you have the fictional Jedi Knight such as Luke Skywalker and Yoda which are listed under many fictional INFJ lists. Certainly those characters would be deemed "Protectors" or "Guardians". One size or label doesn't fit all for sure.
MLK , for example, the label of "Protector" or "Guardian" would fit him well because he stood up for many people and faced grave bodily harm eventually losing his life in the process, but he was also a strong advocate of being non-violent which also many pacifists believe.
Ghandi ,another example that's on INFJ lists , the label of "Protector" or "Guardian" would apply to him as well but like MLK, was also strongly opposed to violence.
Going back to the fictional Jedi Knight, it's odd how most people claim them to be INFJ-like and LOVE doing so, but clearly they are very different in their method of actions as "Protectors" and "Guardians" compared to MLK and Ghandi and yeah...lol... I know I'm going out on a limb with this comparing 2 historically famous and real people to 2 fictional fantasy film characters but I'd just like to see where this goes.
It's just that so many believe in the INFJ stereo-type that the majority are soft,timid,shy,warm,ect. and incapable of inflicting harm. When I see those terms of "Protector" and "Guardian" , I have no issues if violent actions are needed to back them up.
Would MLK and Ghandi ever have been put on INFJ lists if they had been advocates of violence for aiding their rightful cause? I'm just trying to add to this discussion and take it to another level. I would say YES, but many here probably would not. They both had extremely deep feelings for civil rights and humanity and both stood up as being protectors and guardians.
I think the labels of "Protector" and "Guardian" in relation to INFJs can fit both the passive AND those who carry defensive claws and teeth if you will.
For me, I believe in the Knight code of chivalry, the real Knights that is of the medieval period. They could back up their bark with a nasty bite so to speak but they too could carry the labels of "Protectors" and "Guardians"but yet they also strongly believed in PEACE.