In the video below from 1987, Grandmaster Harris A. Edwards, Jr. is sparring with a kickboxer who showed up at the dojo and asked to fight someone, because he needed some additional sparring rounds before his upcoming bout. This was years before UFC 1, and Edwards showed nice integration of punching, kicking, and takedowns.
Right from the get-go, Edwards lands a big head kick and you can tell immediately that he is more skilled, more widely skilled, and stronger and faster. Look at how he just picks up his opponent, hurls him through the air then slams him down ruthlessly just 30 seconds into the session.
The kickboxer literally lands nothing of note the entire session. The martial artist is in complete control of the distance and lands whenever he wants. Though he pretty much kicks his butt, he is probably still just taking it easy on him as he could have probably knocked him out immediately. It's impressive and adds credence to the saying, "There are levels to this."
What is Dojo Storming?
The advent of mixed martial arts has largely stemmed the practice, but Dojo Storming was a thing in martial arts for generations. The most dramatic example of it took place in 1970.
John Keehan had ads in the back of every comic book at the time, offering, under the name of Count Dante, to share his deadly martial arts secrets. Keehan, a fellow black belt named Jim Koncevic, and three students stormed the Green Dragon Society’s Black Cobra Hall in Chicago. In the ensuing melee, Koncevic was killed with a traditional martial arts weapon. The incident lived on in infamy, as an example of what not to do.
Called Dojoyaburi in Japanese, the practice of Dojo Storming has a history there extending back to ancient times, and is considered by some to be part of the samurai lifestyle. The Kodokan school of judo was intently involved with Dojoyaburi during its early years, and there were karate practitioners who engaged in it as well.
In the modern era, dojo storming and challenge fighting was widely practiced by the Gracie family in Brazil. That eventually led to the founding of the UFC.