We are starting to collect policing, defence and other safety/ security-related data. Feel free Tweet us if you have anything to suggest.
The South African Banking Risk Information Centre (SABRIC) compiles their own statistics from members which you can probably request from them, and you may want to enquire with national and industry business associations to see if they collect data.
Finally, we suggest reviewing this article by AfricaCheck on analysing crime rates in South Africa.
See this useful paper about protests data.
Then see the SAPS Incident Registration Information System (IRIS) data for 2013 to 2018 sourced through @SAHAnews PAIA request.
@MunicipalIQ generates a Protests per Capita Index.
ISS also creates a Public protest and violence map