I can recall something similar happened once before.
It didn't work out very well for the folks taking the guns as I recall.
... it was stipulated that the said inhabitants having deposited their arms with their own magistrate, should have liberty to depart, taking with them their other effects. They accordingly delivered up their arms, but in open violation of honour, in defiance of the obligation of treaties, which even savage nations esteemed sacred, the governor ordered the arms deposited as aforesaid, that they might be preserved for their owners, to be seized by a body of soldiers; detained the greatest part of the inhabitants in the town, and compelled the few who were permitted to retire, to leave their most valuable effects behind.
Excellent example.