Looks like he was refering to the ordinaces that were passed in 2015.
He just fails to mention that they were illegal and slapped down.
Link
"The mayor of Columbia, South Carolina, Stephen K. Benjamin, spoke about his city’s experiences with protestors over the removal of the Confederate flag from the South Carolina statehouse. Permits were issued for the Black Panther Party and the KKK to march and protest on the same day
in 2015. At the time, the city passed ordinances to restrict the ability to carry firearms around the state capitol, and officers worked closely with both groups, which helped manage a difficult situation and reduce confrontations and violence. Thoughtful dialogue and coordinated leadership is needed now to diffuse similar situations, he said."