While Buzzfeed isn't what I'd call a go-to fact-checking organization, I do think this link is worth checking out, just as a reminder that in a situation like this it's really important to think critically about the information you're seeing, especially in the social media.
We’re Keeping A Running List Of Hoaxes And Misleading Posts About The Nationwide Police Brutality Protests
There's a lot of BS out there right now.