It is an interesting question how far AirBNB could go to reduce racism on their platform. An email reminder won't work. Someone who is uncomfortable having a p

It is an interesting question how far AirBNB could go to reduce racism on their platform. An email reminder won't work. Someone who is uncomfortable having a particular ethnic group will not be swayed by an email reminder not to be racist. Furthermore, unless racism is widespread in a particular area, it may not be possible to identify racists with statistical analysis and threaten racist hosts with banning. I can imagine this working in a relatively racist place where >5% of hosts refuse service for a particular (and relatively common) ethnicity but it's likely rare enough in most parts of the U.S. to avoid reliable detection without false positives.