Which is a better/more interesting topic?

[CrazyAngel]

We're doing something called a Laws of Life Essay, in which we reflect on an experience and what we've learned from it. Our teacher wants us to write about a situation in which we said or did something with positive intentions, but the outcome was negative. I'm undecided if it's too controversial to tell a story about how I told my bi-racial friend (who thought she was white) that she was bi-racial, and her mother got upset at me because she didn't feel it was my place to tell her. Or, I could go with a lighter story about when I was younger, and my friend sang for me, and she sounded AWFUL and I told her in my own "first-grader" way that she couldn't sing...the outcome: major tears, and her mom said everything short of "Look at what you did."

Which one would you rather read about? Which do you think would make a better essay?
I'm turning the essay into my 11th grade LA teacher.