"I wonder if they will push some politic agenda or if they will manage to stay neutral."
Nah. They will be neutral. But facebook is stupid. They should let somebody else pay for it. Like Facebook Germany uses money donated by Soros to make sure everything is in line with the outstanding current German government.
http://soros.news/2017-02-10-facebook-fact-checker-censorshi...
Correctiv, the German "fact checking" organization, just exposed a female politician who has worked as a prostitute before.
Enjoy!