“Federal law prohibits political campaign or election-related activities within Army National Military Cemeteries, to include photographers, content creators or any other persons attending for purposes, or in direct support of a partisan political candidate’s campaign,” the cemetery officials’ statement said. “Arlington National Cemetery reinforced and widely shared this law and its prohibitions with all participants. We can confirm there was an incident, and a report was filed.”

https://apnews.com/article/trump-arlington-cemetery-altercation-afghanistan-3f0331e9209336a9b696ec164be7eb1c