defense force
When people come to the defense of a product/company in order to defend their purchase/usage of said product and, in turn, their ego.
Example:
Bill: Christ, the PS4 is way expensive and there really isn't many good games coming out for it
Ron: Fuck you, if you can't afford it maybe you should stop working at McDonalds
Bill: Here comes the Sony defense force
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Jeremy: This band isn't how they used to be
Paul: Then stop listening to them, turn off your computer and stop having opinions that contradict mine.
Bill: Christ, the PS4 is way expensive and there really isn't many good games coming out for it
Ron: Fuck you, if you can't afford it maybe you should stop working at McDonalds
Bill: Here comes the Sony defense force
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Jeremy: This band isn't how they used to be
Paul: Then stop listening to them, turn off your computer and stop having opinions that contradict mine.