Think before you post.
That's not the message you typically get from Internet companies. The ethos on Facebook, Twitter and Instagram is to (over) share. But Nextdoor, a social network, has decided to block users from publishing certain posts, specifically when they appear to be racial profiling.
A techie tackles race
Talking about race and racial profiling does not come naturally to Nirav Tolia, the CEO of Nextdoor. And yet, he's doing it anyway.