Irresponsible choice comments to blame one person for a
Systemic problem.    

This might well have been a conservative speech showing concern for school dress or the 'free form' experiments of teaching in the late 60's.    Those conservative efforts were also a concern for distractions that interfered with focus and academic success.

Balderus is right to discourage destructive passionate conflict in the district.   These are not adults, it is not the purpose of school to provide and open forum for civil conflicts that sacrifice teaching time.   It could be structured into a civics class without rising to a campus wide shouting match and possible aggression.