It has become voguish to portray 1980s Ireland as a God-fearing hellscape, and while the decade undoubtedly had its grimmer moments, the caricature doesn’t tell the entire story. Yes, there were moving statues, Garret FitzGerald and Charles Haughey playing pass the parcel with the office of taoiseach, and an ongoing economic implosion that reduced much of the country to a rust belt in the rain. But people felt less beholden to the Catholic Church than at any previous point in modern Irish history, while pop culture was exploding. It was a detonation that produced, among other things, the moral panic...