Star Trek: Enterprise, Series 1, Episode 4. First broadcast on Wednesday 10 October 2001. Stardate: Unknown (2151).
After the crew of Enterprise decide to ignore the advice of their only competent crewmember, they find themselves on a very routine away mission on a very unremarkable planet, exhibiting behaviour that would embarass the most racist of your racist uncles. Turns out that at the end of the day, it hasn’t been such a long road getting from there to here.