Misplaced Credit

Dad returned to the car after running in to Bloom for some lemonade. Sam had been thinking pensively.

Sam: "There's a song in our patriotic show that isn't right. It gives credit to Martin Luther King Jr.'s Dad for all the things that he did. They always leave out the "Jr." part. The song says that Martin Luther King gave the speech 'I Have a Dream'. He was probably dead years before that speech took place."