Apparently Yelp has a no-fly list
Standard practice in Manhattan and Philadelphia at most office high-end office buildings. this is the world Americans live in. Yelp isn't in the business of protecting civil liberties.edit: standard practice to deny entry to non-badged persons who aren't on a pre-submited event guestlist. i've seen this, for example, at every tech meetup held in a downtown office building i've ever been to in Manhattan and Philadelphia.edit2: i've never actually challenged this, but i've been told that i would be denied entry if name not on list.