Westboro baptist church is protesting at a funeral im going to?

Someone I know died from a roadside bomb while fighting for our country. And him being a soldier of coarse westboro plans to picket this event. they are holding it at our school so they will have to stand across the street. I'm going to be in the group that guards them from the funeral. There are so many things I would like to do and say to these people. I know not to physically touch them for legal purposes. But what can I say to them? I want stuff that will get to them. Make them tick possibly. What would you honestly do?