Sentence:  Fifth Transition, from about the beginning of the Korean War to the last of 1951, saw a diffusion of interests in fandom, with a wartime boom in stf coinciding with Campbell's amazing advocacy of crackpottery like Dianetics while the <WSD>Gafiation</WSD> of opposition leaders like Rapp and the Insurgents left Tucker's Bloomington News Letter briefly the top fanzine. 
Meaning of the word marked with <WSD> tags:  The act of gafiating; a beginning or end of involvement in fandom.