Almost none. PBS is known to lie and stealth retract stories when caught, including in one instance by calling an innocent bystander a "white nationalist" after

Almost none. PBS is known to lie and stealth retract stories when caught, including in one instance by calling an innocent bystander a "white nationalist" after they were attacked in a car by someone brandishing a gun during a protest (evidence was stealth removed). AP has issued multiple retractions for whopping lies, including using images of kids in cages and claiming they were under the Trump administration, when the images were taken during the Obama administration (afterwards they nuked all evidence, of course).