Martial Views, the author has posted a couple of stories about how two of his students have applied what they learned in Karate outside of class. Below is an excerpt. The full post may be read here.
...Stories like this are meaningful because they illustrate how valuable karate practice can be. Marge's case was extreme; her life was at risk and she had no choice but to resort to the jutsu or technical aspects of karate to protect herself. Thank god she's alright, and I've been given good reason to believe that this episode won't repeat itself for her.
Stan's story was far less dramatic - he was never in any physical danger - but his self-respect was at stake. He was not acquainted at all with the co-worker who took his parking spot and had no idea how confronting him would turn out. Given this uncertainty, Stan was nonetheless resolved to fix this problem and conducted himself admirably.
Both students exemplify the spirit of karate-do: The ability and willingness to take one's training outside the dojo with effective and positive results.