Dan (rank) is by far the most recognizable symbol to the general public. The highest dan ranks are sometimes reserved for the founder or leaders of a style and only high-ranking students can be promoted to them. For example, only five living people hold a tenth dan in judo and only about thirty-five worldwide have been promoted to the rank since its inception; of those 10th dan promotions only fifteen were conferred by the Kodokan, all of them to Japanese judoka. This has led to upper level ranks becoming extinct in some arts. In other styles, the dan ranks are not the
Judo in Canada the 2012 Olympics as part of a CTV series called "The Difference Makers", features Kelita Zupancic, who was training in Japan during the 2011 Tōhoku earthquake and tsunami disaster. The National Film Board has also produced two short documentaries about Judo. The first is "Judo Jinks" (1954), hosted by journalist Fred Davis, which includes a brief history of Judo, some demonstrations, and an interview with judoka Bernard Gauthier. The other documentary, "Judoka" (1965), features Doug Rogers and was filmed after he won silver In Tokyo. It shows his intensive training under the famous Masahiko Kimura (widely considered one of the