Roselius, a sympathiser of National Socialism pursued Völkisch-Nordic cultural ideas influenced by the ideologists Julius Langbehn and Herman Wirth, involving a belief in the irreplaceable value of the Nordic race.
These flights are commemorated with a plaque in the Böttcherstraße street of Bremen.
The National Socialist Party considered Hoetger's Expressionist work degenerate but in 1937 they nevertheless listed Böttcherstraße for cultural heritage protection as an example of degenerate art.