Turkey's Pelin Unker wrote about the Malta-based companies owned by former Prime Minister Binali Yildirim and his two sons.
It is the second time the Roshen store has been targeted in protest against Petro Poroshenko.
Sanders wrote a CNN column slamming the global oligarchy, but he's not slumming it.
"The major issue of our time is the...handful of billionaires [who] own and control a significant part of the global economy," he said.
The Queen of England has been caught with $13.1 million invested in offshore tax havens. Critics are calling for an apology and a full investigation.
Silicon Valley investor Yuri Milner said he was not involved in any political activity.