I found a rather handy list of logical fallacies (which is what you're describing) and several of them seem to fit:

• Bandwagon:

  It's obvious that Bandwagon is going to win as the greatest fallacy. You wouldn't want to be one of the losers who choose something else, would you?

• Appeal To False Authority:

  Your logical fallacies aren't logical fallacies at all because Einstein said so. Einstein also said that this one is better.

• Appeal To Majority:

  Most people think that this fallacy is the best, so clearly it is.

It would really depend on the context that wrapped the fallacy. Those three, however seem to mostly serve to diminish anyone challenging them, simply for challenging them.

They imply that "you aren't one of us", or "you are a heretic for not agreeing with (false authority/majority)" or "your favorite store is sub par if it doesn't have this item".

I don't think there is a single term to describe this other than fallacy, as the mechanics of each fallacy differ sufficiently to warrant separate classification.

I found a rather handy list of logical fallacies (which is what you're describing) and several of them seem to fit:

• Bandwagon:

  It's obvious that Bandwagon is going to win as the greatest fallacy. You wouldn't want to be one of the losers who choose something else, would you?

• Appeal To False Authority:

  Your logical fallacies aren't logical fallacies at all because Einstein said so. Einstein also said that this one is better.

• Appeal To Majority:

  Most people think that this fallacy is the best, so clearly it is.

It would really depend on the context that wrapped the fallacy. Those three, however seem to mostly serve to diminish anyone challenging them, simply for challenging them.

They imply that "you aren't one of us", or "you are a heretic for not agreeing with (false authority/majority)" or "your favorite store is sub par if it doesn't have this item".

I don't think there is a single term to describe this other than fallacy, as the mechanics of each fallacy differ sufficiently to warrant separate classification.

I found a rather handy [list of logical fallacies][1] (which is what you're describing) and several of them seem to fit:

• Bandwagon:

  It's obvious that Bandwagon is going to win as the greatest fallacy. You wouldn't want to be one of the losers who choose something else, would you?

• Appeal To False Authority:

  Your logical fallacies aren't logical fallacies at all because Einstein said so. Einstein also said that this one is better.

• Appeal To Majority:

  Most people think that this fallacy is the best, so clearly it is.

It would really depend on the context that wrapped the fallacy. Those three, however seem to mostly serve to diminish anyone challenging them, simply for challenging them. They imply that you aren't one of us, or you are a heretic for not agreeing with (false authority). [1]: http://blog.geekpress.com/2006/09/excellent-list-of-logical-fallaciesad.html

I found a rather handy list of logical fallacies (which is what you're describing) and several of them seem to fit:

• Bandwagon:

  It's obvious that Bandwagon is going to win as the greatest fallacy. You wouldn't want to be one of the losers who choose something else, would you?

• Appeal To False Authority:

  Your logical fallacies aren't logical fallacies at all because Einstein said so. Einstein also said that this one is better.

• Appeal To Majority:

  Most people think that this fallacy is the best, so clearly it is.

It would really depend on the context that wrapped the fallacy. Those three, however seem to mostly serve to diminish anyone challenging them, simply for challenging them. 

They imply that "you aren't one of us", or "you are a heretic for not agreeing with (false authority/majority)" or "your favorite store is sub par if it doesn't have this item".

I don't think there is a single term to describe this other than fallacy, as the mechanics of each fallacy differ sufficiently to warrant separate classification.