However, he gets in some good points, gets a few facts to penetrate, and after the kid stopped talking to Whitsell for eight months, he came back after he looked into Islam on his own, and had to admit Whitsell was right. It's a triumph of the facts.
And it illustrates the point that you don't really have to convince someone Islam is a dangerous ideology. You only have to convince someone to look into it. The true nature of Islamic doctrine speaks for itself without any emphasis or embellishment on your part. This is good news. It means your mission is easier than you thought.
Read the blow-by-blow transcript of Whitsell's interaction with his friend's son here: With Facts I Helped Open Someone's Eyes to the Dangers of Islam (You Can Too).