If the man that took the kick filed a police complaint , the guard whose nose he broke would also file a police complaint. They’d both get done in the courts. Could be the reason for not reporting it.
Cannabis isn’t as harmless as people think especially for teenagers and young adults when the human brain isn’t fully developed until 25yo. It can severely alter the psyche of these young people. Modern strains are highly potent and basically zonk people out of their mind. I myself was a regular cannabis and quit a few years ago when I noticed things in my life i didn’t like. Irritability and even outbursts when I didn’t have it and I also felt its better to face the world with a clear mind. Occasional users won’t have these issues but when it becomes a habit it can be harmful.