In the last decade or so, protests in the United States do not just take place in big cities. For example, the No Kings website listed over 30 gatherings in the suburbs of Chicago:

The website listed 7 sites in Chicago itself, including the primary site in the Loop which drew over 100,000 people. But people in the region had plenty of options where they could join others. Some of these locations are close to the city while others are on the edges of the metropolitan region. From what I can see on the map, most residents were with 10-15 miles of a protest site and many could access multiple options.

Three related thoughts:

1. The portrayals of suburbia in the postwar era tended to emphasize its conservative or Republican bent. This may have been true in numerous places but is harder to sustain these days with suburbs closer to cities often leaning Democratic and suburbs on the suburban edges often leaning Republican.
2. It would be interesting to look more closely at these suburban protest sites. Where can people gather in the suburbs for political purposes? Suburban downtowns or city halls? Shopping areas or busy streets? Public parks and public spaces? Which places helped increase the solidarity among those gathered and which ones helped them reach others who did not come?
3. The suburbs are built around driving. How many protesters around the Chicago region drove, parked, and then protested? Protests tend to happen on foot but people have to be able to get there and options are limited in some suburban settings.