Erklärung 2018 (English: Declaration 2018) was an open letter in Germany calling for intellectuals to provide support for protests against what the document describes as mass immigration into Germany. Initially published on the internet with 34 signatories from prominent German figures, the document was later turned into a formal petition to the Bundestag. The letter was notable to uniting formerly disparate political tendencies to legitimize right-wing and anti-immigrant sentiment in mainstream German politics.