Proper Speech

[Director Michael]

Should a Noahide try to refute accusations they think are false?

That would be a matter of personal choice. And if someone is going to go to the extent of refuting accusations, he should first do the research to be able to know and prove that they are false.

As an example, in another forum, some deniers of the Torah tradition claimed that King David committed murder and adultery. I have examined the issue as well as I can, and from what I have read, it seems the accusation is false. There is no doubt David's actions were less than exemplary as evidenced by the rebuke he received from the prophet Nathan, but the rebuke itself shows that David's actions were MUCH different than murder and/or adultery, and neither word is used in any connection with King David anywhere in Scripture, as far as I can tell.
The problem is, those deniers have used the debate to accuse G-d-Fearing Jews of hiding David's faults or white-washing his character.

That is simply the result of their unlearned misunderstanding and denial of the true facts.

That being used as an allegory, if one researches an accusation and determines from the available evidence that an accusation is false, ought the Noahide present the evidence that would indicate the accusation is false?
Or, should we drop the subject for fear that continuing the conversation allows the accusation to be repeated more times and for a longer period of time than if we refute it?

Ever since the time of King David himself, those accusations against him have been hurled by deniers of his righteousness and his Divine appointment as the progenitor of the Messiah's royal patrilineal dynasty. When the subject comes up, you can try to explain to receptive individuals the actual fact that David did not transgress any of the commandments (since Uriah was a rebel against the king's authority, and Batsheva had already been given a conditional divorce). But the false liable against King David will probably continue to circulate until his descendant the Messiah comes, speedily in our days.

This is a far cry from the political mud-slinging, propaganda, cover-ups and lies that we have to endure in our day and age, as part of the price we have to pay for the blessing of living in a society that's based on democracy (more or less). Getting involved in debates about particular politicians is a matter of personal choice.