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 Mehmedovic, who competed in the 2008 and 2012 Olympics. Musician Mark Kasprzyk, who previously went by the stage name 'Kazzer', was an alternate for Canada's 2000 Olympic Judo team. In the video for his best known song as Kazzer, "Pedal to the Metal" (2002), Kasprzyk confronts a bully (played by Sebastian Pawlak, also a judo fighter) and disables him using the Judo throw "ippon seoi nage". He now goes by 'Kaz' and is the front man for the group Redlight King, best known for a song titled "Old Man" (2011) that samples fellow Canadian Neil Young's song by the same