Suspect arrested in Charlie Kirk killing

President Trump has announced that the main suspect in the assassination of the US conservative activist Charlie Kirk, named as 22-year-old Tyler Robinson, has been caught. We get the latest from the US and talk to a political historian about the recent upsurge in political violence in America. Also in the programme: Brazil's former President Jair Bolsonaro has been found guilty of plotting a coup and sentenced to 27 years in prison - we hear from one of his former ministers; and what are the little red dots in space? Could they be “black hole stars”?(IMAGE: FBI Director Kash Patel speaks during a press conference announcing details on the suspect in the shooting of U.S. conservative commentator Charlie Kirk, who was fatally shot during an event at Utah Valley University, in Orem, Utah, U.S. September 12, 2025 / CREDIT: REUTERS/Cheney Orr)