Too many M & M arguments

That's M for Motivation, as opposed to consequences. Arnold Kling distiguishes between the two is a critique of some Paul Krugman articles. Basically,

A hypothetical example of a Type C argument would be, "Well, Arnold, studies actually show that the minimum wage does not cost jobs. If you read the work of Krueger and Card, you would see that the minimum wage probably reduces poverty."

A hypothetical example of a Type M argument would be, "People who want to get rid of the minimum wage are just trying to help the corporate plutocrats."

Environmentalists also love Type M arguments.