balaclavas:
A balaclava, also known as a balaclava helmet or ski mask, is a form of cloth headgear designed to expose only part of the face. Depending on style and how it is worn, only the eyes, mouth and nose, or just the front of the face are unprotected. Versions with a full face opening may be rolled into a hat to cover the crown of the head or folded down as a collar around the neck.
The name comes from their use at the Battle of Balaclava during the Crimean War, referring to a town near Sevastopol in Crimea. [Wikipedia]
Noted in this CNN news report about violence in Venezuela:
Before the attack began, a man who identified himself as Perez appeared in a video online saying an operation was underway to seize democracy back from Venezuela’s “criminal government.” Flanked by a group of armed men in military fatigues and balaclavas, Perez claimed to be speaking on behalf of a coalition of military, police officers and civil officials.