NEW ORLEANS — A performer who was part of Kendrick Lamar’s Super Bowl halftime show was detained by security after waving the Sudanese flag and Palestinian flag together with the words “Sudan” and “Gaza” written on them toward the end of the performance, the NFL said.

Are you going to be a coward?” Zül-Qarnain Nantambu asked himself before taking the field for Kendrick Lamar’s show. “Are you going to take a stand?”

Kendrick Lamar’s Super Bowl halftime show was filled with symbolism—from Uncle Sam(uel L. Jackson) to a crip walking Serena Williams—but perhaps the most powerful symbol on stage was not even planned,