When the Nazis came to power, considerable clashes and infighting had stemmed from conflicting views on what constituted a Jew—anything from full Jewish background to one-sixteenth part Jewish blood were argued for—thus complicating the definition of the offense.[9] Some regarded the number of intermarriages as too small to be harmful; such Nazis as Roland Freisler regarded this as irrelevant owing to the "racial treason" involved.[10] Freisler published a pamphlet that called for banning "mixed-blood" sexual intercourse in 1933, regardless of the "foreign blood" involved, which faced strong public criticism and, at the time, no support from Hitler.[11] His superior, Franz Gürtner, opposed it both for reasons of popular support and such problematic issues as people who did not know they had Jewish blood, and that allegations of Jewish blood (true or false) could be used for blackmail.[12]