Identities can be formed around just about anything, including being "clear", allowing what comes up to not stick, of having nothing to defend. And as with any identity, it gives a sense of I and Other, of boundaries, walls, hardness, and - yes - something to protect. I am this, and not that.
It is just another way to create a sense of a separate I, and of resisting being with experiences as they are. Or rather, it is the same as usual in terms of splitting the field into I and Other, and resisting what is. It is just another flavor, another take on it.
I have noticed this one come up over the last couple of days, where some people around me have been in bad moods, irritable and reactive. My response has been to go in the other direction, taking refuge in an identity as not that (at least right now), but it is really just another way of resisting experiences, resisting what is. Just another way to set up walls between I and Other, between I as this identity, and Other as experiences, people and behaviors that fall outside of this identity.
Noticing this wall and hardness, the sense of something to protect, the sense of the possibility of a fall, makes it easier to not resist the resistance. To allow that too to be as it is. And in this, "I" am no longer on one side of the wall and certain experiences and behaviors on the other, but I find myself as the space that the wall and both sides of the wall exists within and as.
There is a sense of release, of spaciousness, of allowing resistance and walls and defense to fall. There is a freedom to allow whatever arises to arise, independent on which side of the wall they happen to arise, to allow it as just aspects of the field.