  We are conducting a multi-wavelength (radio, optical, and X-ray)
observational campaign to classify, morphologically and physically, a sample of
55 flat-spectrum radio sources dominated by structure on kpc-scales. This
sample contains 22 compact-/medium-sized symmetric object candidates, a class
of objects thought to be the early stages of the evolution of radio galaxies.
The vast majority of the remaining objects have core-plus-one-sided-jet
structures, half of which present sharply bent jets, probably due to strong
interactions with the interstellar medium of the host galaxies. Once the
observational campaign is completed, we will constrain evolutionary theories of
radio galaxies at their intermediate stages and possibly understand the physics
of the hypothesized narrow line region in active galactic nuclei, given our
advantageous statistical position.
