Gillick dismissed Townshend's excuse for accessing child porn and questioned his motives.
"[Research] is one of the most common excuses given by people who visit kiddie porn sites," he said. "These sites are most often visited by people who have a sexual attraction to children, just like people who go to grocery stores most often do so to get food. And of course, he paid for this, so he supported the industry when he did that. When you pay for child porn, you place an order for its next victim. I'm sure Mr. Townshend is intelligent enough to understand that."
Gillick pointed out that even after Scotland Yard cautioned Townshend, the rocker got into further trouble. In 2006, Townshend published a story on his Web site called "The Comedian," which graphically described sex between a 16-year-old boy and girl. Townshend removed the story after children's charities in the U.K. expressed outrage, and apologized with a statement on his site: "I'm afraid I have had to end this Blog. I'm so sorry for those of you who were beginning to enjoy it, but it has upset certain people, and I sincerely do not wish to offend anyone."
Gillick's organization has distributed hundreds of flyers around Miami's Sun Life Stadium protesting Townshend's participation in the Super Bowl.
Protect Our Children joins another organization, Child AbuseWatch, in condemning the NFL for this year's choice of halftime performers. Child AbuseWatch president Evin Daly published an open letter to the NFL in early December, writing, "Inviting Townshend to play is a blatant disregard to the values of American families and a slap in the face to victims of child sexual abuse."
ABC News' Sheila Marikar contributed to this report.