Surveillance video provided by Iowa State University shows the Hawkeye Marching Band leaving the stadium to the west after Iowa defeated Iowa State on Sept. 14, 2019. Fans skirmished with the band while leaving the stadium, outside the view of this camera, officials have said. Iowa State University, Special to the Register
Although involved parties — including members of the athletic departments of both Iowa and Iowa State — don't see eye-to-eye about what happened in Ames on Sept. 14, officials seem to agree that fan behavior is a growing problem across the nation.