LA County Parks is implementing following changes effective November 30, 2020:

All playgrounds will be closed. Fitness zones and exercise equipment will be closed. Parks and trails remain open for outdoor, passive use for individuals or members of the same household. Masks and physical distancing are required. No group gatherings are permitted

https://covid19.lacounty.gov/covid19-2-2/closures/

Emphasis mine

Edit: and for reference, because I do think you have a point, the George Floyd protests started months before November 2020.