Airbnb bans 'party houses' following mass shooting

Five dead, and four injured. 

A Halloween house party in Orinda, California, took an unexpected and dark turn late Thursday night when gunfire erupted and partygoers fled for their lives. The house had been rented on Airbnb, and on Saturday the company's CEO belatedly said enough is enough. 

"Starting today, we are banning 'party houses' and we are redoubling our efforts to combat unauthorized parties and get rid of abusive host and guest conduct, including conduct that leads to the terrible events we saw in Orinda," wrote Brian Chesky on Twitter.