Is it alluring? Does it fit within some nice narrative? Can it be explained inside a one-page newspaper article? Then it has enough going for it that it doesn't necessairly need to be true in order to propagate.
This CANNOT be over stated. If it matches your own view you have to be even more wary of it than if it doesn't match your own view. If it fits in your own narrative then you want it to be true. If it doesn't fit then you don't want it to be true.
Always consider your own bias. Does it provoke a strong emotion in you?