The protective eagle, symbol of the Nazi Party, was often depicted with a swastika that it held by its talons in a circle. There is a strong link being made here: the Nazis with their swastikas are the embodiment of the state and the guardians of the family and nation. The role of individual, each family member, is to support the party.
Later this sense of guardianship and "safeguarding the Nation" would extend to protecting the purity of the "blood" in the German family from the corruption of inferior human beings. The seeds of that disastrous racial thinking, propped up by pseudo-science and propaganda, were already being sown.