In the 60's, Vietnam was just too hot a topic to handle. Outside the news, it just was not discussed on broadcast TV shows. Except for one. In the episode A Private Little War, Star Trek provided a nice little object lesson on how easy it is for well meaning people to get pulled into a war that doesn't really help anyone.
In the tradition of the silly court jester being the only one who could speak truthfully to the King, Star Trek was able to get away with it because it was "just a science fiction show." With that cover, ST was able to take on some pretty deep questions. It didn't waste any time either. The pilot asked "Does absolute power corrupt absolutely?"
I can't help but see something similar in the MLPFIM previews. Although the character doesn't have absolute power in this case, the situation could be even worse The power is being wielded by someone with an infantile understanding of how the world works and the ways her powers are effecting it.
The result? Highly destructive, run-away climate change that threatens an entire society.
There's a ghostly familiarity here, like I've seen something like this recently. Although I doubt it was deliberate, this is dangerously close to topical and (Celestia forbid) prescient.