https://www.vice.com/en_us/article/g5gq8b/employee-charges-amazon-with-violating-labor-law-at-nyc-union-drive

Since late April, organizers of a union drive at Amazon's Staten Island warehouse complex have been hosting a weekly barbecue on a patch of public land near a bus stop that has been attracting a growing crowd of Amazon warehouse workers who stop by during shift changes to grab hot dogs, hamburgers, potato salad, and ziti. According to the union, hundreds of these workers have also signed union cards. 

On May 4, several hundred workers showed up to the barbecue, according to organizers of the group that calls itself the Amazon Labor Union. The next day, a chain link fence was erected around the perimeter of Amazon's parking lot for warehouse workers, forcing the union organizers to relocate to a location with less foot traffic.