Google Play policy about using Images of celebrities

Anyone have any direct experience in this subject?
The Developer Policy specify that you infringe copyright using:

  • Photos taken from a public figure’s social media account. (this one seems pretty clear)
  • Professional images of public figures.

What the second point means exactly? does it include any pictures that I may find on Internet? as I guess all of them have been taken by some professional photographer.

What about using original (newly created by me) caricatures artwork of a public figure? is this ok with Google?