“That’s something that happens. The migrants travelling the Aegean Sea, very often they abandon the children. They don’t seem to have the same… affection we have for children.”
They’re making a joke on the word high, there’s really not much else to read into it. It’s a joke. Wave their flags high can mean holding them high up or waving their flags while under the influence.
The blatant dehumanisation is sickening as well.