The Universal Clown Conspiracy has been with us for a long, long time...

Clowns: killing us with their "Weapons of Peace"

You are right to fear clowns. Notice the perfidy of clowns: they seek to annihilate the human race via the poison of cigarette use, and call their cigarette promotion a promotion of "Weapons of Peace." Sure it is: "solitudinem faciunt et pacem appellant—they [would] make a desert and call it peace." [link]

Beware the clowns!