[Blood of Tyrants]

Watermelons, green on the outside, commie red on the inside.

[AlexW]

“Watermelons, green on the outside, commie red on the inside.”
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This concept/term goes back over 12 years or so.
Communist: Green on the outside, red on the inside.

http://www.freerepublic.com/focus/news/744061/posts