When a private corporation tells you can't say something at work, that's not really censorship. At least, not in the First Amendment sense of the word. When a record company "censors" lyrics - much as I hate it - that's not really censorship either. You can still take your record to anoher label, who'll cut it without censoring it. But
when the government tries to tell you you can't say something, then that is censorship.
It's really happening folks. This administration has a disdain for science, and James Hansen, NASA's top climate scientist is on the receiving end of it.