Of course they’ve done worse. Many of those threats against Bush resulted in a visit from the Secret Service— and rightfully so. That’s not the point. The point is that making threats against the President is illegal, and our side should not be doing it either.
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.
What threat? Tell us exactly what threat there is in this image. All I see is Obama portrayed as a cold, souless fiend. It's pretty accurate, actually.