"In the Cardassian legal trials are entirely a
formality and only have
a ceremonial function. The verdict is determined long before the
actual trial is held. The person prosecuted learns what he or she
allegedly committed at the trial."
Which is a generalisation based on a single episode. Is it
universally true? Do we care?
It could be written better ("In Episode X a Cardissian legal trial is
shown to be entirely a formality..."), but the episode is a valid
source. I don't care if you care or not - how much people care doesn't
appear anywhere in Wikipedia policy that I know of.