Surface density of ﹩K< 19.0﹩ galaxies as a function of radial distance from the radio galaxy. The four panels are subsamples selected by the K‐band magnitude of the target radio galaxy. The horizontal line in each panel represents the local field density of K‐band–selected galaxies, defined as the average surface density of galaxies between 120^{﹩\arcsec﹩} and 180^{﹩\arcsec﹩} from the radio source.