Parenting Advice From Joy Berry: The Trouble with Rap Music

I should have suspected that something was up when the doors opened on a subway train that I was boarding and everyone except eight rowdy teens disembarked and scrambled into the neighboring car. But by the time I figured it out, the train was ready to leave the station. So I hopped onboard and took the first seat that I came to.

When the train started, rap music began to blast from a boom box and the eight teens started rapping at the top of their lungs.

Before that moment I had always...