Facebook rejects ad criticizing actions of Zuckerberg political group
washingtonpost.com
washingtonpost.com
FTFY. They'd do it even if Candy Crush used his photo. This is not newsworthy.
Which should shock nobody who's been paying attention.
New York Times, NPR even Fox News, will host dissenting opinions. And pretty much every media outlet will allow their competitors to run advertising.
And 'host dissenting opinions' is funny. As long as they can make them appear silly or wrong, sure.