What term is used generically to refer to activities that may require police traffic control in crowd situations?

The term that is most appropriately used to generically refer to activities that may require police traffic control in crowd situations is "Demonstration." Demonstrations often involve large groups of people gathering to express their views on a particular issue or topic, and they can lead to significant traffic disruptions. These events may require police to manage the flow of traffic to ensure both the safety of participants and the general public.

While gatherings can also pertain to a variety of social or community events that might necessitate traffic control, the term "demonstration" specifically implies an organized effort that typically reflects a stand on issues, which often leads to the need for more extensive crowd control and traffic management by law enforcement. Other terms, such as assembly and protest, may also occur in similar contexts but may not encompass all activities requiring police oversight or uniquely identify the nature of the crowd as explicitly as a demonstration does.