This, frankly, sounds like a cop out. If you're not into politics, then don't host an event like this. And do more research than a 10 second skim when it's something to do with the community you are in and the people who frequent your establishment. Besides... a 10 second skim would have immediately brought up all of the information about this. You were intellectually lazy about this. Own that you effed up. Cancel the event. Do better.