Good evening from New York. I'm Chris Hayes. There is a massive scandal that has been roing the entire public health infrastructure of this country because the guy in charge of it is a dangerous crank with a pathetic record.And today, Americans had a chance to see just how dangerous and dishonest and just plain weird he really is. In less than a year, Health and Human Services Secretary Robert F. Kennedy Jr.. has overseen the worst measles outbreak in this country in 30 years. He has limited access to vacci ...