A Federation protest movement led by Pascal Fullerton that believed pampered citizens had grown soft, and which sabotaged the weather control system of Risa to make its point.
The New Essentialists Movement is a group of Federation citizens who argue that luxury and indulgence have sapped the moral strength of the Federation and left it unable to face enemies such as the Borg and the Dominion.
They appear in the Deep Space Nine episode Let He Who Is Without Sin..., where their leader Pascal Fullerton holds rallies on the pleasure planet Risa. Worf, unhappy about his relationship with Jadzia Dax, is drawn to their message and helps them tamper with the weather grid, bringing days of rain to the resort.
When Fullerton goes further and uses a device to cause earth tremors, Worf recognises that he has been acting out of his own insecurity, takes the device from him and ends the campaign.