Common Sense Note
Parents need to know that this Star Trek: Deep Space Nine is by far the most violent entry in the franchise. One alien race was enslaved and forced into concentration camps, while another has been genetically engineered to become the perfect fighting machine (their masters take over a portion of the galaxy and prove to be brutal dictators). A secret faction within the Federation engages in biological warfare. Later seasons focus on an all-out war against the Dominion, which costs billions of lives and features several battle scenes involving hundreds of starships. There are more sexual situations and innuendos than in other Star Trek series, but there's never any nudity, and language is not an issue.
No nudity, but more sexual situations and innuendo than other Star Trek series. Couples occasionally shown in bed together, etc.
Explores themes of genocide, fascism, and oppression, all of which come with plenty of violence -- though it's discussed more often than it's shown. A central long-running plot line involves a major intergalactic war, with plenty of spaceship battles and some ground combat.
The Federation is portrayed as a benevolent democracy with a tolerance and acceptance for other cultures. However the series also features several other cultures with very different values, including the Klingons, who judge each other by their fighting prowess; the sexist Ferengi; and the Dominion, a fascist dictatorship bent on taking over the galaxy.
No direct product promotion, but the Star Trek franchise is a commodity in itself.
Drugs / Tobacco /
One of the main characters owns a bar where many important scenes take place, usually with a fair amount of drinking. An entire race of villains has been genetically engineered to be addicted to a drug.