This is a ridiculous show of censorship that is nearing that of communist China. The National Parks employees are public servants who work diligently to care for, protect and promote the parks system. They have every right to use social media to inform the public. I personally wish Trump used social media for good, rather than senseless attacks.
The park employees who tweeted posted facts. These are verifiable facts, not alternative facts, and no laws were broken, no one was harmed etc. They should be admonished for resisting orders which aren't based in science or reality. The new administration may be advancing an anti-science agenda, but there is no reason to support falsehoods, even if they come from a president.
The most dangerous mistake dissenters can make for the next 4 years will be to underestimate how petty and spiteful any retribution will be.
It may feel good to stick it to The Man on your way out the door for the last time, but when the man you’re sticking it to has repeatedly demonstrated a complete lack of empathy for any human that does not provide an immediate material benefit to his ego or his wallet and had just been made the most powerful person on the planet, you need to carefully evaluate your tactics.
The Parks Department employees should not be admonished for tweeting material that defies the president. There is a guarantee of freedom of speech. This right is essential, especially if the current administration is not favorable of issues pertinent to the employees, such as environmental issues. These employees future livelihoods may depend on voicing their opinion and winning in their favor.