What does the quote “ democracies die in the dark “ mean

It is trying to say that democracy dies when it is not presented to the public and is hid away in the darkness. That information must be presented in a non-biased manner. Democracy is a type of government that is run by the people, and to hide that from them in the darkness would kill it.

This is just what I believe the quote means, hope this helps!

Here are some helpful links to assist you with your research:

https://en.wikipedia.org/wiki/Human_Rights_Day

http://www.un.org/en/events/humanrightsday/

http://www.ohchr.org/EN/AboutUs/Pages/HumanRightsDay.aspx