The parents of a student killed in the 2018 massacre at Marjory Stoneman Douglas High School have tricked a former president of the National Rifle Association into giving a high school graduation speech defending gun rights in front of 3,044 empty white chairs — one chair for each student who could not graduate this year because they were killed by gun violence. David Keene, who still serves on the NRA board, thought he was giving a rehearsal speech for graduating students at the James Madison Academy at Las Vegas — but no such school exists. This is part of what David Keene said.

David Keene: “There are some who will continue to fight to gut the Second Amendment. But I’d be willing to bet that many of you will be among those who stand up and prevent them from succeeding.”

The stunt was organized by Change the Ref, a group founded by Manuel and Patricia Oliver, whose son Joaquin “Guac” was shot dead in the Parkland, Florida, massacre in 2018.