Original sentence: Specifically, this form of mud slinging is often very controversial, easily repeatable, difficult to disprove, and often based on weak (or nonexistent) evidence.Swiftboating is American political jargon for an ad hominem attack against a political figure, coordinated by an independent or pseudo-independent group, for the benefit of an established political force
Edited sentence: Swiftboating is presenting the truth against a political figure, who was lying about his own record to further his political career