A coach’s role is not only to teach athletes how to play a particular sport, but also to set a sportsmanlike example — especially when the athletes are impressionable high school kids.
In the footage shown below, Teresa Fann, Grundy County High School cheerleading coach, appears to try to trip a “rival cheerleader”.
https://youtu.be/RWCiCI-ac3k
It is not necessarily clear what her true intentions were, but it stirs the crowd into a frenzy. That is no way to set an example for.