The massacre in New Zealand tells us a lot about online extremism — the role tech companies play in regulating or banning fringe users, and the role each of us plays in creating the online ecosystem where hate can thrive. How do we reckon with online hate? What consequences should there be for the bigots who promote acts of violence? Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find us on Twitter @1A.