Robyn Sweet has grown increasingly concerned over the last five years as her father has become immersed in far-right conspiracy theories. Then, on January 6, she saw a photograph of him in handcuffs inside the United States Capitol Building.
Douglas Sweet turned down an interview with the BBC.
He was among hundreds of Trump supporters who stormed the US Capitol four months ago. We take a look at how many people have been arrested. Watch video interview below: