Ask HN: A Facebook page is committing a copyfraud. How can you deal with that?

I uploaded a viral video (a recording of mobiks in Russia) on my personal facebook page some time ago.

Now a facebook page that reposts viral videos from the web (and has 70M followers) claimed ownership of my upload, in a clear copyright fraud. Facebook put a link to the "owner" under my upload.

Facebook proposes me to appeal to the fraudster only (which I did and it was rejected, of course). I didn't find a way to report a copyfraud.

How can you deal with that?

It isn't something that important to me, it's just a matter of principle.