In the case of Esus/Odin, the victims were often ceremoniously garroted (which is a fancy word for fancy rope used to strangle someone) or hung from a sacred tree and had their throats slashed. The operative words here being hung/choked and neck slashing - Esus/Odin loves trees, strangulation and blood. I felt that the combination of Darth Vader and Mickey Mouse in our current state of corporate-political-military-world-domination-eco-terrorism-meltdown seemed an aptly modern symbol for such a blood thirsty god.
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I would like to point out that my primary source right now is "The Life and Death of a Druid Prince" by Anne Ross and Don Robins. This book, a gift from my girlfriend, has changed my life and opened a whole new world of things to obsess over.