Phil Donahue repeatedly put NAMBLA on his show so they could be exposed (repeatedly) while receiving a public introduction and mainstreaming (repeatedly) or to argue their case (repeatedly), you decide.
I’m going by memory about more than one NAMBLA appearance on the show because search doesn’t work very well on the question.
The original Crossfire with Buchanon and Braden also did a number of shows with NAMBLA content. Sunshine is the best way to expose horrendous beliefs. I fully believe that overturning Roe wouldn’t have happened without the idiots at Planned Parenthood trying to defend partial birth abortions and denying selling baby parts.