Taking campaign photos and videos at gravesites is expressly forbidden under federal law. If someone else also did that, that is also wrong. It doesn’t cancel it out and thus make it ok.
https://www.cnn.com/2024/08/29/politics/us-army-rebukes-trump-campaign-arlington-incident/index.html
“Participants in the August 26th ceremony and the subsequent Section 60 visit were made aware of federal laws, Army regulations and DoD policies, which clearly prohibit political activities on cemetery grounds. An ANC employee who attempted to ensure adherence to these rules was abruptly pushed aside,” the Army spokesperson said in the statement
“This incident was unfortunate, and it is also unfortunate that the ANC employee and her professionalism has been unfairly attacked. ANC is a national shrine to the honored dead of the Armed Forces, and its dedicated staff will continue to ensure public ceremonies are conducted with the dignity and respect the nation’s fallen deserve,” the statement said.