Is there a such thing as collective narcissism? Maybe I'm referring to the dominant ideology, but is it possible for people to get together and combine their narcissistc ideologies together and share them? Are there any good papers on this subject?
Possibly worth considering: Theodor W. Adorno.  "What Does Coming to Terms with the Past Mean?" (1959) included among selected writings in "Can One Live after Auschwitz? A Philosophical Reader (2003). 

Adorno wrote: "On the subjective side, in the psyche of people, National Socialism increased beyond measure the collective narcissism, simply put: national vanity. The individual’s narcissistic instinctual drives, which are promised less and less satisfaction by a callous world and which nonetheless persist undiminished as long as civilization denies them so much, find substitute satisfaction in the identification with the whole. This collective narcissism was severely damaged by the collapse of Hitler’s regime, but the damage occurred at the level of mere factuality, without individuals making themselves conscious of it and thereby coping with it."