There are all types of warnings in nature. When a cat puffs its fur up and hisses, you know not to try to pet it. When you here a rattling sound coming from the ground, you know to look for a rattlesnake. When a skunk raises its tail at you, you know you shouldn't be there.
A similar big warning in politics is when David Duke agrees with you. Sheehan is in dangerous territory and should reconsider what she is doing.
