The EU has not been able to produce pan EU leaders. Without such leaders its not possible to counter such type of politics.
With many languages there isn't a general public. For news it's way more interesting to have sound items in the native language than translation and some concepts, some way people grew up won't transalte at all.
And then life situation between Germany and Romania varies a lot. There are only very few, if at all, problems shared a politician could campaign on.