My Facebook friend illegally copied a photographer's photo?

[Immortal-gateway-♥.♥]

So one of my acquaintances recently uploaded a copyrighted photo onto Facebook. He didn't purchase it; just printscreened it- essentially stole it. I messaged him politely to recommend that he take it down because it's so slack to the poor photographer who's trying to make ends meet in this world...but he just ignored me.

I'm not sure what I should do next. I checked out the photo report option but it seems to only send the person a message asking them to take it down...or does it actually contact the regulators of Facebook as well?

Thanks in advance, everyone
@Andrew: I know some people feel this way, and I don't mean to raise a controversial issue. It's just that for every stolen photograph, the photographer loses plus or minus $10 s/he otherwise would have gained, to humbly make a living...so yeah there is harm done.