This practiced based research asks How can decoding and encoding signs challenge colonial thinking in Mexican advertising? Hybrid practice-academic methods explore how a manufactured weaponized multimodal campaign can disrupt the colonial and racist thinking underlying Mexican publicity. The decolonised visual practice appropriates Eco’s Semiological Guerrilla Warfare, (1986) where academic thinking decodes signs and symbols from popular culture which are reconfigured semiotically to jam messaging (Dery 1993). The campaign is created through the artistic style of Détournement (Debord Woolman 1958) and generates an online debate within the mass media.The digital conversation is evaluated through content analysis where the users offered solutions to decolonize advertising during the creative process: such as avoiding aspirational strategies and brands leading by positive examples; removing stereotypes; along with media companies offering toolboxes to implement inclusive messaging and hiring more people of colour. In comparison the trade press did not offer solutions, but the national press emphasised how the issue of racism is supported through the advertising industry in their branded messaging, and asked them to look for solutions, beginning the process of eradicating colonial thinking from Mexican Advertising.This research explores the encoding of signs placed in visual communication through new hybrid practice-academic methods to accelerate change by asking the advertising industry to construct a new reality through encoded signs.