Apparently, the pic was real.This is one of the more embarrassing elements of Judaism. According to this article (in Hebrew), the man is a cohen (כֹּהֵן “priest” [a son of Aaron]) who was concerned when it was reported that the flight that he had been moved to would be flying over a cemetery. This is a basic explanation of the situation.
Leviticus 21:11 has the following prohibition for cohanim (כֹּהֲנִים – plural of cohen):
וְעַ֛ל כָּל־נַפְשֹׁ֥ת מֵ֖ת לֹ֣א יָבֹ֑א לְאָבִ֥יו וּלְאִמּ֖וֹ לֹ֥א יִטַּמָּֽא׃Since a cemetery is the place where we bury the dead, it has long been the traditional understanding of this prohibition that a cohen cannot enter a cemetery.
And he shall not approach dead bodies, nor shall he be made unclean for his father or his mother.
The man in the picture above was worried about the fact that the flight path would pass over a cemetery, so he consulted a rabbi. The rabbi told him that if he wrapped himself in a plastic bag, then he would not be contaminated and could pass over the cemetery.