Collecting Mark Flood's irreverent reinventions of the protest signHouston-based artist Mark Flood's (born 1957) 1992 protest signs were first deployed outside the Republican National Convention of that year. With cardboard, foam core upcycled from the Menil Collection and vintage stencils gifted by a relative of Jackson Pollock, Flood's signs display ironic slogans beside silkscreened images of Reagan, Bush and Schwarzenegger.