What happened to the Karate Epidemic of the 70's and 80s?

Back in the 70's Karate and Kungfu were the biggest form of fitness. What happened to this era? Well, it seems since African Americans could learn how to fight and defend themselves there had to be a well designed plan to end this epidmemic. Men had come home from the Vietnam War which was located in Asia. They had first hand exposure to these ancient forms of defense. Most likely, they brought their knowledge home with them after the war ended. Now, when the men returned all they spoke about would have been all they had learned from the War. Then, Bruce Lee came on the scene. He began making Kung Fu and Karate movies revealing all kinds of secrets on the big screen. This may have gotten him killed for revealing ancient secrets but no one really knows. Previously, people never thought much about the Japanese or Chinese population. This new epidemic had everyone thinking they all knew Karate or Kungfu and people all over were afraid of them. However, as time continued children all over were watching Karate movies. They were the best thing ever. Children as myself would run outdoors to practice playing Karate. This activity kept us healthy and fit. We were exposed to how they learned certain techniques and movements. What people didn't expect was that we could see the movements and mimic them as quick as they were. When people saw this they had to end this movment of Karate. The U.S has always perputrated a plan to keep Blacks from defending themselves. All sorts of laws were put in place to keep Blacks from obtaining legal guns. Therefore, huge numbers of Blacks were learning how to defend themselves with their hands and feet. This became a problem and this generation and era of Karate had to end. They couldn't allow our population to become fit, healthy, and knowledgable into ancient art forms of Karate and Kungfu. This would have made Blacks very strong thus the era had to end. As a child of the 70s, we continued to try and learn this form of fighting. I practiced so much people in my neighborhood believed I knew Kungfu. All my friends were afraid of me because of all I could do. They were mimic forms of movements I had learned from the movies. Hell, once I even bodyslammed a girl who wanted to fight me. Therefore, girls never fooled with me too much. They were more afraid of what I could do. Later, I went on to learn correct forms of gymnastics. Previously, I learned how to flip watching the Karate movies. I was brave and bold. I never feared much of learning anything. I could watch anything and learn it. There were many more people out there just like me. Therefore, the era and most wonderful generation of Asian Art form ended here in America. Now, we welcomed the age of Obesity...