This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.

Social media platforms are still struggling to stop the spread of the Buffalo shooting video

Social media platforms are still struggling to stop the spread of the video of the racist mass shooting in Buffalo, New York, on Saturday that left 10 people dead, most of them Black. It’s symptomatic of their failure to curb the online sharing of the sorts of racist ideologies that inspired the attack, experts say.