Below are some possible keywords to get you started with your research on the library databases and Google Scholar. Remember to use synonyms, Boolean operators (and, or, not), and check out keywords that authors use in their article (usually listed under the abstract of the article):
- "protest dynamics" and violence
- policing and public protests
- "crowd management" and "public protest"
- policing and protests
- protest crowd events
- "protest events" and crowds