and ZM- to reflect an individual's decreasing level of Romani ancestry. This classification meant that one could be classified as Roma and subject to anti-Roma legislation based on having two Roma great-great-grandparents. Dr. Zindel of the Ministry of the Interior prepared a draft of a Reich "Gypsy Law" intended to supplement and accompany the Nuremberg Laws. According to Zindel, the "Gypsy problem" could not be dealt with by forced resettlement or imprisonment within Germany. He recommended identification and registration of all Roma, followed by sterilisation and deportation. In 1938, public health authorities were ordered to register all Roma and Roma Mischlinge. Despite Himmler's interest in enacting such legislation, which he said would prevent "further intermingling of blood, and which regulates all the most pressing questions which go together with the existences of Gypsies in the living space of the German nation", the regime never promulgated the "Gypsy Law". In December 1942, Himmler ordered that all Roma were to be sent to Nazi concentration camps. "The Jewish problem" Disenchanted with the unfulfilled promise of Nazi Party leaders to eliminate Jews from German society, SA members were eager to lash out against the Jewish minority as a way of expressing their frustrations. A Gestapo report from early 1935 stated that the rank and file of the Nazi Party would set in motion a solution to the "Jewish problem ... from below that the government would then have to follow". Assaults, vandalism, and boycotts against Jews, which the Nazi government had temporarily curbed in 1934, increased again in 1935 amidst a propaganda campaign authorised at the highest levels of government. Most non-party members ignored the boycotts and objected to the violence out of concern for their own safety. The Israeli historian Otto Dov Kulka argues that there was a disparity between the views of the Alte Kämpfer (longtime party members) and the general public, but that even those Germans who were not politically active favoured bringing in tougher new antisemitic laws in 1935. The matter was raised to the forefront of the state agenda as a result of this antisemitic agitation. The Interior Minister Wilhelm Frick announced on 25 July that a law forbidding marriages between Jews and non-Jews would shortly be promulgated, and recommended that registrars should avoid issuing licences for such marriages for the time being. The draft law also called for a ban on marriage for persons with hereditary illnesses.