I think they're legal as long as they don't specifically call for violence against people or groups of people.
The US laws are a little more open than the draconian laws in Europe, where people are arrested for merely expressing ideas which are not politically
corect. IE: Nick Griffin, Oriana Fallaci.
They're even want guys like Paul Belien of
The Brussels Journal to be prosecuted for his writings. I think
France Echos has also had problems.
Whatever happened to freedom of speech in Europe anyway?