This link was posted by z-mach9 1 hour ago on HN. It received 119 points and 41 comments.
The people behind this are a real (if silly) student organization at UChicago and Northwestern campaigning for the legalization of onion futures trading. Sometimes they will aggressively hand out free onions to passerby on campus. It's quite entertaining.
They have a website also: https://onionfutures.org