Betsy Greer coined the term "Craftivism" in 2003 which means to use creativity for greater good.
Craftivism not only involves yarn and fiber but also other creative methods of getting one's point across.
These images were for a gender inequality campaign done by the Craftivist Collective.
History In Chroma Key:-
Helmut Smits painted statues with questionable pasts (links to colonialism & slave trade) a chroma key green color. This allows to create a medium for new ideas and possibilities.
This made me think of other instances where something like this was done. For example: