Anti-war group Code Pink marked President Barack Obama's birthday Sunday with a knock against U.S. drone policy.

[blackbirdpie url="https://twitter.com/codepink/status/364063886355345409"]

Code Pink, which regularly protested war on terror policies under President George W. Bush, has been sharply critical of Obama as well. In May, Code Pink co-founder Medea Benjamin interrupted Obama repeatedly during speech on national security issues.

Demonstrators with Code Pink hold a die-in as a protester flies a mock U.S. military drone over them outside the Obama campaign headquarters in Chicago on May 17, 2012. (Getty Images)

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