You're spot on. It would appear that the answer to your last question is no. At least, not yet. PBS certainly has the integrity and intellectual honesty to create non biased, non bigoted and non prejudice shows though. However, they seem to have been forced to stop due to the defunding from the republican religious right wing in Congress who wants to turn the country into a Christian theocracy. It appears they don't care about accuracy, facts or evidence when it proves them wrong:The Bibles Buried Secrets - PBS Documentary400 years of astronomy part 1PBS Doc: An Atheist Mom Goes to the Supreme Court - and Wins'Christ Conspiracy' & the Ancient Astronaut Theory
- this one is largely in regards to the History channel show entitled, "Ancient Aliens."