The army says he did.
"ANC conducts nearly 3,000 such public ceremonies a year without incident," the Army spokesperson said. "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. Consistent with the decorum expected at ANC, this employee acted with professionalism and avoided further disruption."