A video clip of an event held by Nazi sympathizers appeared on social media in Germany, causing outrage, but it may explain the support for the far-right AfD Party seen in polling.

After rising in popularity, the party dropped from 21% to 17% support, but that was still higher than the number of its voters in the eastern parts of Germany.

The footage shows a party where participants called for foreigners to be expelled, chanted “Germany belongs to Germans,” and sang Italian hit song “L’amour toujours,” a favorite of the neo-Nazi movements, as one of the party goers raised his hand in the Nazi salute placing his figure on his upper lip to mimic Hitler.