An Obama administration guidance, sidestepping law to serve an albeit well-meaning social agenda, may have deepened the very injustice it was meant to correct. Haven’t I heard this one before?

New York City public schools, where Mayor Bill de Blasio’s implementation of an Obama-era guidance that discouraged teachers from suspending minority students, have become host to more and more violent and disrespectful student behavior since the guidance was issued in 2014.