If you haven't heard of Monsanto Roundup, it's a controversial herbicide that may contribute to antibiotic resistance and is possibly carcinogenic—and it's been sprayed all over New York City. You can find out whether you've been picnicking with herbicides by checking out this new map, released by activist and performance artist Reverend Billy Talen.

The map draws from 2014 city data obtained through a Freedom of Information Law request, according to EcoWatch.com. The data shows that Monsanto Roundup, also known as glyphosate, was sprayed 2,748 times in 2,000 locations that year. This does not include data from areas managed by private non-profits, which would explain why Central Park appears so innocuous compared to large swaths of the outer boroughs—indeed, Manhattan appears relatively herbicide-free throughout.

Along with members of The Stop Shopping Choir, the Black Institute, Stop The Spray, and the Coalition Against Poison Parks, Reverend Billy released the map in advance of their meeting with Department of Parks and Recreation Commissioner Mitchell J. Silver, during which they demanded that the city ban the use of Roundup and glyphosate. In doing so, New York would join a number of cities, including Chicago, Vancouver, and Paris, that have banned glyphosate use in public spaces. The group also wants the city to disclose all locations where the herbicide is sprayed.

Reverend Billy and his choir, along with the Lower Eastside Girls Club Choir, were set to perform outside the Central Park Arsenal prior to the meeting. According to the Reverend's Twitter, no amount of torrential rain was enough to quell the action.

An NYC Parks spokesperson would not speak to how the meeting went, but said that "NYC Parks is committed to environmentally responsible pest management. NYC Parks treats weeds where they grow, by manual or mechanical means whenever possible.... When that fails, or when resources do not allow, we spray Roundup, in complete compliance with NYC, NY State and Federal laws."

UPDATE:Despite activists' claims, the Parks Department emailed us to insist it's not sprayed on playgrounds, not that it's dangerous or anything.