The blessing and curse of social sites in this modern world is that it gives us a view of the mind of people we would never have interacted with 10 years ago.

They were always there, but now they can talk to you, even if you would shun them in "real life".

I try to remember you can frame what they say in different ways. The "black man walking" post can be seen as "racist" or "badly written" or "someone has an anxiety disorder".