The whole thing has been badly handled, as Roy Greenslade said in the Guardian.
"Harriet Harman took too long to apologise over Daily Mail's paedophile allegations
Harriet Harman issued an apology this morning for the fact that the National Council for Civil Liberties (NCCL) was linked in the 1970s and 1980s to the Paedophile Information Exchange (PIE).
In a statement issued by her office, which was quoted on BBC's Today programme this morning, she expressed regret for the ties between the two organisations, and regretted the existence of PIE. She also stressed that she had never supported paedophilia in any shape or form."
...
"The story should never have reached these proportions. Harman and Dromey should have acted sooner. I can understand why they didn't because the great majority of Labour politicians will have no truck with the Mail, believing it to be hopelessly prejudiced.
It is, of course, but that doesn't mean that one can afford to ignore all it publishes. It was a serious allegation and should have been taken seriously.
Incidentally, Hewitt, a former Labour minister who stood down as an MP in 2010, has yet to comment. Her silence is also unwise."
www.theguardian.com/media/greenslade/2014/feb/25/harrietharman-dailymail