Signs, symbols, emblems, flags or insignia of groups under which they organize themselves successfully and who insist on bringing their own world-systems into the existing order(s) on a local and/or global scale, often under the threat of severe sanctions from the state or government.
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A Veve (spelled Vévé or Vevé) is a religious symbol commonly used in different branches of voudou throughout the diaspora such as Vodou and is different than the petipembas used in Palo or ponto riscado's used in Quimbanda since they are all separate African religions. It acts as a "beacon" for the Loa, and will serve as a loa's representation during rituals.
The origin is unknown, though it is believed that the veve was derived from the beliefs of the Indigenous Taíno people. However, it may descend from the cosmogram of the Kongo people; or originated as the Nsibidi system of writing for the Igboid and Ekoid languages.
According to Milo Rigaud "The veves represent figures of the astral forces... In the course of Vodou ceremonies, the reproduction of the astral forces represented by the veves obliges the loas... to descend to earth." 
Every Loa has his or her own unique veve, although regional differences have led to different veves for the same loa in some cases. Sacrifices and offerings are usually placed upon them, with food and drink being most commonly used.
In ritual and other formalities, veve is usually drawn on the floor by strewing a powder-like substance, commonly cornmeal, wheat flour, bark, red brick powder, or gunpowder, though the material depends entirely upon the ritual. In Haitian Vodou, a mixture of cornmeal and wood ash is used.
Veve can be made into screenprint, painting, patchwork etc., as wall hangings, artworks, and banners.