  Radio galaxies are intensively discussed as the sources of cosmic rays
observed above about 3 EeV, called ultra-high-energy cosmic rays (UHECRs).
Here, the key issues from a recent investigation are summed up, where the
individual characteristics of radio galaxies, as well as the impact by the
extragalactic magnetic-field structures up to a distance of 120 Mpc has been
taken into account. It is shown that the average contribution of radio galaxies
taken over a very large volume cannot explain the observed features of UHECRs
measured at Earth. However, we obtain excellent agreement with the spectrum,
composition, and arrival-direction distribution of UHECRs measured by the
Pierre Auger Observatory, if we assume that most UHECRs observed arise from
only two sources: The ultra-luminous radio galaxy Cygnus A, providing a mostly
light composition of nuclear species dominating up to about 60 EeV, and the
nearest radio galaxy Centaurus A, providing a heavy composition dominating
above 60 EeV. Here we have to assume that extragalactic magnetic fields out to
250 Mpc, which we did not include in the simulation, are able to isotropize the
UHECR events at about 8 EeV arriving from Cygnus A.
