I am interviewing two members of the Westboro Baptist Church, would love help with interview questions

Hi all,
I am interviewing two members of the Westboro Baptist Church. One is a pastor and I am unsure what the other one is. I would love some great advice or questions for what to ask them. I am trying to make it as peaceful as possible despite the views they stand for. Also, trying to figure out to interview them separately or together. Please let me know your thoughts.