<h1>Black hole feedback suppresses star formation as AGN radiation and jets drive galactic gas outflows.</h1> A multiwavelength study of 538 active galactic nuclei shows that intense radiation from accreting supermassive black holes, often together with relativistic jets, ejects gas from galactic centres and suppresses central star formation. By crossmatching optical spectroscopic data with radio imaging, the research finds a markedly higher incidence of energetic gas outflows in radio-detected AGN, indicating black hole-driven feedback as a principal mechanism regulating star-formation in host galaxies.