Obama's Campaign Artist -- Drones Killed All 'Hope'

President Obama's use of war drones is a buzzkill for the guy who created the 'Hope' campaign.

Shepard Fairey -- the artist behind Obama's 'Hope' poster -- was clearly disappointed in the Prez while bouncing from the Chateau Marmont last night.

Fairey was crystal clear -- Obama didn't live up to expectations ... and the word 'Hope' should be replaced on future posters.

Many people credit Fairey's handiwork with igniting the grassroots campaign that got Mr. O elected.