Then it is when someone threatens you not to comment on it. It's a day and age where everyone can comment on anything, regardless of whether whatever that is is accurate or whether their comment is accurate, they can and will comment on it. And regardless of the truth, this is a huge PR disaster! Internal documents have been leaked that state Heartland Institute is perusing a strategy of discrediting climate science, despite them stating they are impartial. Or at least, so the leaker claim the documents do.

Heartland Institute say the documents have been stolen, but that they are also altered or perhaps even entirely faked. And the reason why this claim is not entirely unlikely (although their response to be expected) is because the person who leaked the documents too has an agenda and is not impartial to begin with. One could expect him to use light of the fact that he did obtain actual documents (which could be confirmed) to therefore alter/create documents that would produce statements that the Institute pursues such a strategy.

I don't know whether the documents being faked is true or not; they might be, they might not be. Times have changed, and Heartland Institute is dealing with this public relations crisis the wrong way. Them wanting to sue whoever have spoken about these leaked documents showcasing them in ill light is not going to help to gather the public's acceptance of their claim that the documents are faked. But that reaction does not convince me that they are faked, it only convince that the PR people at Heartland Institute are idiots.