These are not my words, but the writer has put it across rather well;
Five years after Donald Trump’s defeat to Joe Biden, the BBC is facing one of its most serious credibility crises in recent memory. A whistleblower dossier accuses the broadcaster of manipulating footage from Trump’s January 6 speech editing it to suggest he told supporters to “fight like hell,” while omitting his call to “peacefully and patriotically make your voices heard.” The segment aired in Panorama: "Trump A Second Chance?" just days before the 2024 US election. The timing and alleged splicing have drawn fierce criticism, with accusations that the BBC knowingly distorted context to fit a narrative.
The whistleblower, a former BBC standards adviser, claims internal warnings were ignored. The memo is now circulating in Whitehall. Yet the corporation has offered little clarity, saying only that it “takes all feedback seriously.” The BBC repeatedly tells the public it holds itself up as a global standard of impartiality. If these claims are true, that reputation has yet again been seriously undermined exposing the political bias critics have long suspected. Even if not, the lack of transparency raises its own questions. Who approved the edit? Why was it allowed to air? And why hasn’t the BBC released the uncut footage?
Whatever the explanation, trust once lost is hard to rebuild. This controversy doesn’t just cast a shadow over one programme it strikes at the heart of the BBC’s integrity itself. Trump may well sue and those involved may well face the financial consequences if he does. Also this could possibly damage the government's future negotiations with America.