Professional wrestling in Japan has existed for many years. The first Japanese to involve himself in catch wrestling, the basis of traditional professional wrestling, was former sumo wrestler Sorakichi Matsuda. There were subsequent attempts before and after World War II to popularize the sport in Japan, but these generally failed until the advent of its first big star, Rikidōzan, in 1951, who became known as the "father" of the sport. Rikidōzan brought the sport to tremendous popularity with his Japanese Wrestling Association (JWA) until his murder in 1963. Following his death, professional wrestling thrived, creating a variety of personalities, promotions and styles. It has also created a mass of other cultural icons in Japan including: Antonio Inoki, Giant Baba, Jyushin "Thunder" Liger, Tiger Mask, Keiji Mutoh/The Great Muta, Mitsuharu Misawa, and Kenta Kobashi among others. Throughout the years, a number of promotions have opened and closed, but a few have persisted to remain the most popular and thriving companies: New Japan Pro-Wrestling is currently considered by many as the top promotion. Puroresu is the predominant style of professional wrestling that has developed in Japan. The term comes from the Japanese pronunciation of "professional wrestling", which is shortened to puroresu. The term became popular among English-speaking fans due to Hisaharu Tanabe's activities in the online Usenet community. Growing out of origins in the traditional US style of wrestling, it has become an entity in itself. Japanese pro wrestling is distinct in its psychology and presentation of the sport. It is treated as a legitimate fight, with fewer theatrics; the stories told in Japanese matches are about a fighter's spirit and perseverance. Since its beginning, Japanese professional wrestling depended on television to reach a wide audience. Rikidōzan's matches in the 1950s, televised by Nippon TV, often attracted huge crowds to Tokyo giant screens.