Zombies are typically pictured with bullet holes to the head. To show that they are "undead" and that a bullet can't stop them.
For example:
In other words: there's nothing to apologize for.
Except for playing into Demoncrap double-standards.
That’s a fair point. I think I finally see the image there upthread and if that’s all it is, it certainly doesn’t rise to any sort of threat.