Star Trek: TOS 1.16: "The Menagerie, Part II"

That "only death penalty left on the books" thing is bothersome for such a supposedly enlightened future. The planet and aliens aren't anywhere bad enough to warrant such a thing. The Talosians rejected our species as worthwhile to keep around... there isn't much of a danger in going there post-Pike. If they were worried we were going to learn their power of illusion and destroy ourselves, the Talosians can simply refuse to talk to us about it. Killing people for stepping foot on one particular piece of rock doesn't seem to be in the spirit of freedom and exploration.

Still not as bad as Spock smiling at the plants.

yr: 2267
sd: 3013.1
ad: 24 Nov 1966