Deep Space Nine had the most political episode in the Star Trek franchise

The Atlantic

The 1995 two-parter “Past Tense” still “stands out for its surprisingly realistic, near-future vision of racism and economic injustice,” says Robert Greene II. “And unlike the typically optimistic characters that occupy most of Star Trek, in ‘Past Tense’ the people of 2024 are beaten down, exhausted, and weary of their world.”