There is a strain of anti-Orthodoxy in the Greek left and there has been at least since the civil war after WW II. Then the communists came to my maternal village, took babies from their mothers’ breats and smashed their heads on the rocks around the town square. They proceeded to hang 20-30 people from the limbs of the trees there and then ransacked the 900 year old church, gouging the eyes out of the Saints in the icons written on the walls and ceiling.
These anarchists are the political heirs of those communists.
Sixty-four of the seventy-four arrested were foreigners. I doubt they were communists; more likely, they were muslims in my opinion.