I replaced the avatar and my signature is once again in line for approval. There was no glitch. Not only was my avatar removed, it was replaced with another avatar of their choice.
I put it back up, not the moderators. Lets see how long it stays up.
And yes, there is at least one pro NRA avatar and my avatar was in response to it, directly. To have equal representation of ideas and thinking. Otherwise no NRA avatar would have even been considered.