Example of Star Trek Addressing Social Issues - Mental Illness 

This scene got me right in the gut when I first saw it. It was revealed earlier in the episode that Garak suffers from extreme claustrophobia, experiencing a severe attack just a few scenes before this one. I was already expecting Martok and Worf to dismiss Garak’s mental illness, especially because the Klingon Empire prides its people on physical strength. I was waiting for them to call him a coward, not “getting over it” like I’ve heard so many times in my own life about mental illness. But as seen above that’s not what happened, the exact opposite does. Its moments like this that make me love Star Trek, even for all its flaws. Sometimes I get to see past my conditioned reaction of the worst, and get to see the best in people instead.

TDLR; Star Trek may be about aliens in the future, but it connects to me on a human level - more than most modern shows do today. 

100 things you may not have known about Star Trek:
003. Ro Laren, a recurring Bajoran character in Star Trek: The Next Generation, was initially supposed to be a main character and the first officer on Star Trek: Deep Space Nine. However, Michelle Forbes turned the offer down to persue a film career and the position meant for Ro Laren was modified into what would become Kira Nerys.