"At no point in time is this acceptable," Susan Mathes May wrote on Facebook. "At any school, at any performance, in any town."
Gov. Phil Bryant called the performance unacceptable.
The halftime performance by the Forest Hills High School band was supposed to depict a hostage scene from the move "John Q," Jackson Public Schools Superintendent Dr. Errick L. Greene said, WLBT reported.
"The band's performance does not depict the values and people in our community, and was incredibly insensitive to the students, families, law enforcement officials and the entire Brookhaven community," Greene said in a release Saturday, WLBT reported.