That was a massive banner at an Egyptian soccer match.
http://israelmatzav.blogspot.com/201...holocaust.html
Link to video embedded in the link above

Islamists pose a real threat to freedom, but they are hardly the only ones. Populist demagogues are no less dangerous, neither is the odd mixture of demonstrators made up of a mix of Trotskyites, anarchists, and Nasserites. These groups have no real commitment to freedom, and they are obviously no less anti-Semitic than the Islamists. The fact is that anti-Semitism is the daily bread of Egyptian politics.

Perhaps nothing captures this grim image better than the phrase, "One Nation for New Holocaust," which was displayed on a huge banner held by thousands of hardcore soccer fans, known as the Ultras, as seen in a YouTube video bearing the same title. Despite being completely apolitical, the Ultras were at the forefront of the embassy attack, perhaps in retaliation for police violence in a recent game, flying Egyptian flags with a swastika in place of the Eagle of Saladin. Referring to Egypt’s agreement to sell natural gas to Israel, the demonstrators chanted, "We will export no gas, we shall burn you with gasoline" (it rhymes in Arabic).