“Come Together” was inspired by a request from Timothy Leary to write a song for his campaign for governor of California against Ronald Reagan, which promptly ended when Leary was sent to prison for possession of marijuana.

The thing was created in the studio. It’s gobbledygook; Come Together was an expression that Leary had come up with for his attempt at being president or whatever he wanted to be, and he asked me to write a campaign song. I tried and tried, but I couldn’t come up with one. But I came up with this, Come Together, which would’ve been no good to him—you couldn’t have a campaign song like that, right?

Thank you Wikipedia.