Emily Thornberry, the shadow attorney general, was sacked by Ed Miliband for sneering at a family home draped with England flags. Anti-poverty campaigner Jack Monroe was sacked by Sainsbury's after saying David Cameron should resign for using his ‘dead son’ as a front to privatise the NHS.
So why wasn't Iain Duncan Smith, the Work and Pensions Secretary, sacked in 2012 for his ignorant and heartless remarks after saying that disabled Remploy workers were “not doing any work... just making cups of coffee”?
Why wasn't Iain Duncan Smith sacked in 2014, after the Department for Work and Pensions (DWP) publicly admitted it was wrong, that it should not have axed the disability benefits of Asperger's sufferer Mark Wood, who starved to death just five months later, weighing five-and-a-half stone.
I could cite additional examples, but suffice it to say that Iain Duncan Smith has committed more wrongdoing than Emily Thornberry and Jack Monroe combined—and astonishingly, has not been forced to resign. The 'quiet man' has become the 'Teflon man'. Nothing sticks.