Spread flyers and posters just to create confusion/enlightenment.
Something along these lines:
“Learn the truth about human nature! Meet up for a short and enlightening evening concerning humanity – Why are we unhappy and sad, and how does it relate to the way the world is today. Meet new people and enjoy our complimentary coffee and snacks!”
And of course point it to a non-existing place. Not sure if I should document this or not – Seems like too much work, and I’m nothing if not lazy.