Because it seems that they do have to make a few of them.
The latest comes from Mallick's latest employer, The Toronto Star:
"A column by Heather Mallick on July 28 contained a number of inaccurate statements about the well-known British journalist and author Melanie Phillips.
Ms. Phillips has expressed her horror at the slaughter at Utoya, Norway in a clear and unambiguous way, writing “there can be no excuse, justification or rationale whatsoever for the atrocity perpetrated by Anders Behring Breivik.”
The column made reference to Ms. Phillips’ writings in an entirely misleading and inappropriate manner.
The defamatory article has been removed from our website.
The Star and Ms. Mallick regret the errors and apologize to Ms. Phillips."
And here is a report from the CBC Ombudsman on a column Mallick wrote while she was an employee of the CBC. That too has been removed from the CBC website but is available to read here. Notice a trend?
HT to Blazing Cat Fur who has a screenshot of the text of the now deleted Star column which can be seen here.