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The fallacy of the undistributed middle is particularly prevalent. However, in practice it is usually hidden in implications rather than explicitly stated. For example:

1. Murder is a crime. 2. We should be tough on murder. 3. Therefore, we should be tough on crime. (Deliberately) Omitted: Jaywalking is a crime. Should we be tough on jaywalking?

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We should legalize jaywalking, since it was an invention of the car industry to deflect attention from how dangerous their products were (and are) and is unnecessary for a functioning society. I realize you're using the example rhetorically, but still ... that is what we should do about jaywalking.

And now we illustrate the 2nd-order of the fallacy of the undistributed middle.

1. Situation X in my mind is jaywalking. 2. We should legalize Situation X. 3. Therefore, we should legalize jaywalking. (Accidentally?) Omitted: Situation Y is jaywalking. Should we legalize Situation Y?

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