If this was a legal Wiki, you might have a valid point. It's not, so you don't. Why don't you get a ruling as to whether plain english can be used on this Wiki?
The lede is supposed to encapsulate the rest of the article which is quiet clear that this was a murder - not an accidental, natural or judicially sanctioned death.

I do sympathise and understand that for Sinn Féin and the Provisional IRA, the current phase of the conflict is about the definition of the conflict itself. For the self-esteem of the so-called republican movement, and for the political future of Sinn Féin, it is vital that its 30-year campaign of violence be remembered as a just war, a regrettable but necessary method of achieving a legitimate aim. The vile and sordid deeds that run through that campaign may, under pressure, be described as wrong. They may be accepted as "mistakes". PIRA may acknowledge, in the curiously passive language it favours, that these things "should not have happened". But they must never, ever, be called crimes. God forbid!
...(kiwiexile at DMOZ)  • 

(moved here from his talk page at Vintagekits request):
 Result of PIRA investigation 

Why exactly do you think that the views of PIRA should not be fairly represented on Wikipedia in reference to the (presumed?) death of Jean_McConville?

I am rather puzzled as to why you keep excising my new section referencing  the PIRA "Statement on the the Abduction and Killing of Mrs Jean McConville in December 1972", (dated 8 July 2006) by P O’Neill, Irish Republican Publicity Bureau, Dublin

Is it just because you are still editing carelessly and without respect to other editor's work by just hitting the revert button when you see 'naughty words' such as Murder and PIRA?

However, I must congratulate your improvement in tone (if not the quality and care you take with your actual edits). Keep up the improvement!...(kiwiexile at DMOZ)  •