If they threatened the police officers, NG...that would be one thing. But to force them to leave their property on dry ground, where thewy are well provisioned, and to confiscate their arms in the process...IMHO, is just plain wrong, illegal, unbconstitutional, and a crime itself and should not be tolerated.
If you are ordered to leave your home and refuse to leave it, you then become an unlawful citizen. Unlawful citizens can be legally disarmed. ***There is always a way to get around any freedom we have a right to enjoy. At least for a little while until it is challenged in a court of law. Which, in this case, will be to late to do anything about it.