Original sentence: " Null responded by saying: "The guardians of the gates of orthodoxy at PBS... you don't know who their friends are.He sells films on his website that outline this debate.His arguments are supported by scientists such as Peter Duesberg and Kary Mullis, who claim that there is no scientific evidence that HIV causes AIDS.Null has made several films on public policy issues, personal health, and personal development that have screened at various festivals worldwide,  some of which are posted on YouTube
Edited sentence: " Null responded by alleging an effort to silence him, saying: "The guardians of the gates of orthodoxy at PBS... you don't know who their friends are.He sells self-made films on his website that promote AIDS denialism.Null has made several of what he calls documentary films on public policy issues, personal health, and personal development that are posted on YouTube