They want to be taken seriously. So if you have a trombone, bagpipes, a clown costume… anything that makes a mockery of their protest will hurt them more than all the facts and clever phrasing in the world. These people are prepared to argue that aren’t prepared for a clown with a ukalalee . White face paint is cheap. Add a couple red dots on your cheekbones and around your mouth. Boom you’re a clown. The whole time the are talking just stand next to them. Slump your shoulders and rub your hand under your eyes with the classic wrist twisting motion. So they know you’re crying with them. Make sure they can’t get a single good picture of their protest without “that damn clown is in the way!” Cost you about 3 bucks in supplies and would hurt than more than any megaphone. He’ll it’s a drag show? I’m sure someone could lend you some makeup if you tell them why.