That's what Spock says of Nero in Star Trek (2009). The line always stuck out for me, but I never quite understood why until recently. Spock, of course, is Vulcan, and Nero is Romulan, an offshoot of the Vulcans. Further characterizing the Romulans was always a little difficult. In the original TV series, they were presented as another Cold War analogy, like the Klingons, who had fought the Federation in the past but had retreated into reclusiveness. In fact, the fact that Romulans descended from Vulcans wasn't even generally known until they emerged again, and they went back into isolation until The Next Generation, where they became a recurring threat, until the events of Star Trek Nemesis, in which a clone of Picard named Shinzon attempted another full-scale war against the Federation, but ended up suffering the loss of their home planet in the backstory of Star Trek.
Characterizing Nero as "particularly troubled" is a telling detail. Nero's response to the destruction of Romulus is to blame Spock, the older one still alive in Picard's day, and all of the Federation, and to once again declare open war. He sets about a plan to what is in his mind equitable retaliatory action, affecting the destruction of the Vulcan home world and then the rest of the leading Federation worlds, starting with Earth.
And it made me wonder what exactly Nero represented. Longtime fans tend to look down on the new films, claiming they lack the spirit of the franchise by putting too much focus on flashy special effects. But that's simply not the case.
Since 9/11, Star Trek has had terrorism on the brain. Star Trek: Enterprise famously launched within weeks of 9/11. By the end of its second season, Enterprise launched a major story arc in direct response, an act of terrorism against Earth that led to a preventive mission against the aliens responsible.
As you read above, the franchise was responsive to its times from the very beginning. The Klingons and the Romulans were both reflective of the Soviet Union, an idea that culminated in Star Trek VI: The Undiscovered Country with its breakup. The Next Generation continued the tradition; the Troubles in Ireland were often reflected in its storytelling. Deep Space Nine echoed the collapse of the imperial age with the end of the Cardassian Occupation of Bajor, reflecting back to the days of WWII but often evoking present times, if not the Troubles then the ongoing conflict in Israel.
Which brings us back to Star Trek. What if Nero was a Palestinian analogy? Or Islamic terrorists such as those who struck on 9/11? I find it likely. And then Star Trek Into Darkness doubled down on the idea.
You'll recall the above promotional poster, meant to evoke Khan's early terrorism in the movie. Khan himself might as well have depicted the perception that America's response to 9/11 ended up being excessive or misguided, to put it mildly.
Things worth considering.