The phrase build the wall became the central slogan of Donald Trump's 2015 and 2016 presidential campaign, referring to his proposal for a barrier along the United States and Mexico border. Rally crowds regularly chanted it back, turning the line into a recognisable audio cue far beyond news coverage. Clips circulated widely on YouTube, Vine and later TikTok, where editors isolated the chant for memes, remixes and parody videos. It remains in use because the wording is short, the delivery is distinctive, and audiences instantly connect it to that campaign era.