Korn Singer -- Obama is a Dictator Who Uses Miley Cyrus & Kanye West to Destroy America

Korn frontman Jonathan Davis is unleashing the mother of all conspiracy theories -- President Obama's secret agenda to become a tyrannical dictator with Miley Cyrus, Justin Bieber and Kanye West's assistance!

We asked Davis about his band's new "Spike in My Veins" music video -- which is filled with clips of Miley and other pop culture phenoms -- and suddenly it was all aboard the crazy train.

You gotta see it ... right in the middle of LAX, Davis spewed a theory about Obama using celeb scandals as a “distraction” ... while he screws us out of our freedoms.

Por ejemplo ... JD claims Miley's VMA twerkfest was really a smoke screen for something way more nefarious. Nuts, right?

Consider this: Obama signed a law allowing the government to hold citizens indefinitely without trial ... back in January 2012 ... when the big celeb news was Miley and a penis cake.