This was originally rejected as "I don't see how this is dark." I've changed the meme title.
PER WIKIPEDIA (emphasis added): https://en.wikipedia.org/wiki/It_(character)
"[Stephen] King stated in a 2013 interview that he came up with the idea for Pennywise after asking himself WHAT SCARED CHILDREN "MORE THAN ANYTHING ELSE IN THE WORLD", AND FEELING THAT THE ANSWER WAS CLOWNS. King thought of a TROLL like the one in the children's tale "Three Billy Goats Gruff", who inhabited a sewer system."
Imagine somebody who looks like the meme showing up at a party for a bunch of KIDS 3-8 years old. You don't think some of them wouldn't be TERRIFIED??
I think it would take someone with a PRETTY SICK, TWISTED SENSE OF HUMOR to have somebody looking like THAT show up at a kids' party.
... Maybe THAT'S why no one has ever asked me to pick a clown? ...