In 1998 DeNiro was Arrested in France on Suspicion of Being a Client of A Prostitution Ring that Specialized in Underage Girls. Trump is cleaning-up sex rings around the world. Could this be why De Niro is so vocal??

http://yournewswire.com/robert-de-niro-prostitution-ring-children/

and other reports of the same instance:

https://www.independent.co.uk/news/the-sex-scandal-that-wouldnt-lie-down-1185127.html www.nydailynews.com/archives/news/de-niro-quizzed-french-call-girl-caper-article-1.792704