TimcastIRL - Far Left Rioters Charged With Terror In OKC, Prosecutor Says This Is NOT Seattle

Although it is, indeed, possible to forge the metallic components of a bicycle from metals neither smelted nor refined using coal, natural gas, or other petroleum-derived fuels, and although it is likewise possible to compose the tires of said bicycle from hydrocarbons not derived from petroleum cracking...

...one must nevertheless grapple with the reality that the human beings responsible for researching, developing, composing, assembling, and finishing said bicycle may have been bred, fed, comforted, entertained, educated, trained, and/or paid using the proceeds of petroleum consumption or other similar animal exploitations.

Mankind, within its current iteration, hath benefited from the slaying, devouring, and digesting of at least one animal. Thus, to support mankind at all, on such terms, represents an endorsement of the suffering, cruelty, and death endured by an innumerable volume of animals.

Hence... there are no vegan bicycles.