How very dare David Cameron make unsubstantiated allegations regarding Labour's "terrorist sympathisers"!

Maybe they just all happened to bump into each other on the way to work. Who knows?

Then there's this:

The following extract from an 18th July Telegraph article by Andrew Gilligan entitled "Jeremy Corbyn, friend to Hamas, Iran and extremists" also makes Cameron's smear tactics look pretty damned silly:

Mr Corbyn, The Telegraph can reveal, has taken thousands of pounds in gifts from organisations closely linked to the terror group Hamas, whose operatives he once described as “friends”. 

He has travelled to Tehran at the expense of a secretive British-Iranian multi-millionaire who has employed a number of other British parliamentarians as consultants to build business links with the country.

He has hosted, promoted and vigorously defended vicious anti-Semites and racists. Nor, of course, was the al-Sadr talk the first time that Mr Corbyn came a little too close to killers of British troops. From the mid-Eighties, a decade before the IRA ceasefire, he worked hard to build links between Labour and the Provos, regularly hosting senior figures from their political wing in Parliament, calling for British withdrawal from Northern Ireland and paying tribute to deceased terrorists. 

His defenders call him ahead of his time; his opponents say that, by giving the IRA hope that the armed struggle was working, he and others on the Left actually prolonged the conflict.

These days, however, it is Islamist causes that claim more of Mr Corbyn’s attention. Others on the Left may support negotiating with Hamas, whose aim remains the complete destruction of Israel and which continues to kill civilians, but no other MP does so with quite the frequency and fervour of Mr Corbyn.

In February 2013, he and his wife travelled to Gaza thanks to a £2,800 gift from Interpal, a British charity banned by the US government as “part of the funding network of Hamas” and as a terrorist organisation in its own right.

There are plenty more examples of the Labour leader's principled refusal to associate with terrorists or their supporters in the rest of Gilligan's article, here.

And, of course, shadow chancellor John McDonnell's hard-line stance against terrorists has been well-documented. This is what he said at a 2003 meeting to commemorate the brave IRA freedom fighter and champion weight-watcher, Bobby Sands:

“It's about time we started honouring those people involved in the armed struggle. It was the bombs and bullets and sacrifice made by the likes of Bobby Sands that brought Britain to the negotiating table. The peace we have now is due to the action of the IRA.”

According to The Times, he also called, at the height of the IRA's terrorism campaign against Britain, for "the ballot, the bullet and the bomb" to unite Ireland.

And if that isn't enough to refute Cameron's preposterous charges, let's not forget that during the 2010 election campaign, McDonnell said he would like to “go back to the 1980s and assassinate Thatcher.”

Conservative journalist Toby Young has been in particularly feisty form on Twitter regarding Corbyn's patriotism. Here are three of his most pertinent contributions from the last 24 hours: