It's also worth noting that places like Pioneer Courthouse Square in Portland are sunken public spaces, which, while helpful in diffusing sound and making a nic

It's also worth noting that places like Pioneer Courthouse Square in Portland are sunken public spaces, which, while helpful in diffusing sound and making a nice common area, also means the tear gas will linger longer. [1] [1] https://www.tripadvisor.com/Attraction_Review-g52024-d126568-Reviews-Pioneer_Courthouse_Square-Portland_Oregon.html https://www.tripadvisor.com/Attraction_Review-g52024-d126568...