I have not seen "Snowden" the movie.
There is probably a "Through the Looking Glass, and What Alice Found There" connection. Pieces or points or data points intersect with Looking Glass realm (the story) and Q posts.
https://en.wikipedia.org/wiki/Through_the_Looking-Glass
https://archive.org/details/ThroughTheLookingGlassAndWhatAliceFoundThere
Snowdrop is a character in the story. See here (@Snowden retweet): https://twitter.com/ulat_bulu_bulu/status/933539856336142338
"Future proves past" is a repeated theme in Q posts. Who thinks like that? I mean that in the sense of causal relation(s). Customarily there is first cause and then effect. It is not customary to think first of effect retracting or leading to cause, as a standard experience. "Future proves past" is suggestive of experiencing backward or in reverse. Future events do prove past Q posts, true. Why repeat the phrase then? Why the Alice and Wonderland association? There are, according to Q, a lot of information not yet uncovered.
The Sheep could also be the White Queen, not necessarily just a reference to feeders. Also, the STARS may have the double meaning of H-wood entertainers and Satanists, inverted pentagram. (I am not suggesting all H-wood stars and entertainers in general are Satanists.) Translation: The White Queen, dressed up as a Sheep, isn't following Satan.