NPR:
A woman with an apparent grudge against YouTube for what she claimed was censoring and “de-monetizing” her videos, opened fire at the video-sharing service’s San Bruno, Calif., headquarters, wounding several people before fatally shooting herself, according to police.
The NPR article has lots more detail, links to other sources.
My guess is this is just the beginning of some serious and scary push back on both Google properties and Facebook for either misplaced algorithmic filtering or purposeful filtering that offends a fringe group which depends on a presence and ad revenue from these services.
Social media has created a monster that’s going to be tough to control.