Translation of "Advocacy" in German

Groups who have charitable status in Canada aren't allowed to do advocacy.
Gruppen, die in Kanada gemeinnützigen Status genießen, dürfen keine Fürsprache ergreifen.
TED2020 v1

His advocacy there led to the formation of the Englishman's Freedmen's Aid Society.
Seine Fürsprache führte zu der Bildung der Englishman's Freedmen's Aid Society.
Wikipedia v1.0