Youth-led activist group The Raven Corps is hosting Scary Dairy in the Square, a haunted soiree for the lactose "intolerant." Learn more about their mission while enjoying delicious vegan food, a dark dance party, and tarot card readings. You can go trick-or-treating (for vegan treats, of course) and participate in a Halloween costume contest (there will be a prize for Best Anti-Dairy Themed). Get there early—the first 1,000 guests get a free carton of Oatly and a full-sized Lush product. by Shannon Lubetich