The phrase comes from Renan Antônio Ferreira dos Santos, a Brazilian activist, entrepreneur, musician and politician who founded the Missão party and became a pre-candidate for the presidency of Brazil. He popularised prendeu, matou as a shorthand for his hardline position on organised crime, presenting it as a promise of strict action against gang members. The slogan spread through his supporters, political videos and social media clips, where its short, rhythmic form made it easy to quote, remix and reuse as a meme sound.