Among the more shocking aspects of the McGahon affair - if you discount the rape of a 17-year-old boy and the Sinn Féin cover-up that followed - is the reaction of that party's deputy leader, Mary Lou McDonald.
Her default position, as with the Mairia Cahill rape allegations, is to blame everybody but the party she represents and, in particular, its leader Gerry Adams.
While we all know Mr Adams carries so much baggage as leader of the Sinn Féin/IRA movement for the last 30 years, we expected that the likes of Mary Lou McDonald, and some of the younger member of Sinn Féin, might be able to distance themselves from some of the atrocities committed in the name of the republican movement by a previous generation. That has not proved to be the case.
The military precision with which Sinn Féin operates means that she must toe the party line that Adams did the "correct" thing. Contrary to what both say, it was the responsibility of Sinn Féin and its leadership to do all in its power to rectify "historical abuse cases" by doing what was right and decent and immediately contacting the gardaí and/or PSNI. It stands condemned for not doing so.