TAD ranger hoodie is the best gear I've used for the upper body.

http://www.tripleaughtdesign.com/Apparel/Sweaters-Hoodies/Ranger-Hoodie

When people face the possibility of freezing or starving there is little chance they are going to listen to unfounded claims of climate doomsday from a bunch of ultra-rich yacht sailing private jet-setting carbon-spewing hypocrite elites