Counting public gatherings in 2017-Washington Post article

The point of this post is to show how complex and grassroots public gatherings can be counted and measured. The two main researchers quoted in these Washington Post articles are Erika Chenoweth and Jeremy Pressman, both respected analysts of the details of large-scale civil movements and gatherings. As a data junkie, I have followed this effort with a great deal of interest (and have even counted some of these gatherings in my own town to check others’ counts) and look forward to more of the analysis of both the methodology and the actual count data. The analysis included not just the number who gathered but who and what was being protested or being supported, where these events were held, what symbols were used, how many arrests were made.

For March 2017, we tallied 585 protests, demonstrations, marches, sit-ins and rallies in the United States, with at least one in every state and the District. Our conservative guess is that 79,389 to 89,585 people showed up at these political gatherings, although it is likely that there were far more participants.

Certainly, food and farming systems should note some of the systems used for collection and analysis. For example, the Crowd-Counting Consortium may be something that national entities involved in any grassroots data collection systems like food systems should discuss creating for their own use.

Here is their counting method:


An example of their public data set.