One of Streicher's constant themes was the sexual violation of ethnically German women by Jews, a subject which he used to publish semi-pornographic tracts and images detailing degrading sexual acts. The fascination with the pornographic aspects of the propaganda in "Der Stürmer" was an important feature for many antisemites. With the help of his cartoonist Phillip "Fips" Rupprecht, Streicher published image after image of Jewish stereotypes and sexually-charged encounters. His portrayal of Jews as subhuman and evil is considered to have played a critical role in the dehumanization and marginalization of the Jewish minority in the eyes of common Germans – creating the necessary conditions for the later perpetration of the Holocaust. To protect himself from accountability, Streicher relied on Hitler's protection. Hitler declared that "Der Stürmer" was his favorite newspaper, and saw to it that each weekly issue was posted for public reading in special glassed-in display cases known as "Stürmerkasten". The newspaper reached a peak circulation of 600,000 in 1935. One of the possible solutions to the Nazi's perceived problem Streicher mentioned in the pages of "Der Stürmer" was transporting Jews to Madagascar.