I have a modest proposal for the likes of Ukip, MigrationWatch, the Home Secretary, David Goodhart, Paul Dacre and, of course, the BNP. Why not call for "A Day Without Immigrants?" Wouldn't that demonstrate, once and for all, that neither our economy nor our society needs migrants? That they are a burden, rather than a blessing?
"A Day Without Immigrants" was the name given to a rather innovative series of protests in the US in 2006, which brought more than a million Latinos on to the streets of 50 cities, from New York to Los Angeles. They boycotted shops, schools and their places of work to try to highlight the plight of undocumented migrant workers.
But here's how I'd implement a similar boycott here: anyone in the UK born abroad or with a parent born abroad would stay at home for 24 hours. Any business or organisation founded by an immigrant or the child of an immigrant would close for the day.
Britain would be transformed - but, regrettably for the immigration-bashers, in a wholly negative way. In fact, I suspect it would be a pretty awful 24 hours for most Britons, dark and dystopian, even. Think Danny Boyle's 28 Days Later - but without migrants, rather than with zombies.
Let's start with the trivial stuff. Who would serve you in restaurants or coffee shops? Who would make your sandwiches and wraps at lunchtime? What would be the point of going out to eat in the evening if there were no longer any Chinese, Thai, Malaysian, Indian, Japanese, Turkish, Lebanese, Persian, Italian, Spanish and, yes, French restaurants open?
How about your health? Who'd patch you up and prescribe your medicines? Ministers and their outriders in the right-wing press like to scaremonger about the spiralling costs of so-called health tourism (which amounts to a shocking 0.01% of the £109billion NHS budget) and exaggerate the numbers of migrant families that turn up expecting free treatment in our overstretched A&E departments. The reality, as the chair of the council of the Royal College of GPs, Dr Clare Gerada, has pointed out, is that "you are much more likely to have an immigrant caring for you than sitting up in front of the emergency department". About 30 per cent of the doctors and 40 per cent of the nurses working in the health service were born abroad. Put simply, the NHS could not survive 24 hours without its migrant workforce.
The same applies to the social-care sector. If you have a sick parent living in a care home, you might have to take the day off to look after them. In 2009 a fifth of all care assistants and home carers - 135,000 people in total - were foreign-born; in London, 60 per cent of care workers were migrants. Speaking of taking the day off, neither the Deputy Prime Minister nor the leader of the opposition would have to turn up to Westminster for PMQs - Nick Clegg is the son of a Dutch mother and half-Russian father; Ed Miliband is the child of Polish refugees.
Meanwhile, the Chancellor would have to go to the Commons to warn that "A Day Without Immigrants" would, if extended over a year, force him to introduce a further £7billion of spending cuts and/or tax rises. Why? Migrants boost the British economy by £7billion a year, according to an OECD study published in June. That's the equivalent of an extra 2p on the basic rate of income tax.
Sticking with the economy, we'd have to board up iconic British stores such as Marks & Spencer (co-founder: Michael Marks of Belarus), Selfridges (founder: the American Harry Gordon Selfridge) and Tesco (founder: Jacob Kohen, son of Avram, a Polish migrant). UK holidaymakers would have to cancel their cheap flights on easyJet (founder: the Greekborn Stelios Haji-Ioannou).
Our universities, a multibillion-pound export industry, would take a hit, too, if foreign students stayed away. One in ten students in British universities comes from outside the EU and the fees that students from other countries pay are a bigger source of income for most universities than research grants.
What about sport? Imagine going to watch a Premier League game midweek as a Liverpool fan. Luis Suárez wouldn't be playing. If you're a Man United fan, you'd miss out on the ball skills of Robin van Persie; if you're a Man City fan, it'd be Yaya Touré on strike. Chelsea fans? Say goodbye to Juan Mata and Eden Hazard.
Incidentally, if you were planning on using the Tube to go to watch Chelsea play, you'd find it in a pretty filthy state, the train platforms tagged with graffiti and strewn with rubbish: 95% of London Underground cleaning staff are foreign-born. It wouldn't just be the District Line that was dirty, it would also be your place of work: 89% of office cleaners in the capital are migrants.
But the countryside would be fine, right? Wrong. Imagine all those unpicked crops and the effect: the rise in food prices, supermarkets opting for (cheaper) foreign over domestic produce, fruit farmers on their knees. The truth is that "native" Brits have not been interested in fruit-picking for years and, as the Home Office's own Migration Advisory Committee warned in May, many of the UK's fruit-picking businesses could close without new migrant workers from outside the EU.
On immigration, we hear constantly that voters don't trust the official statistics or studies (a recent Ipsos MORI poll found that the public thinks that immigrants make up 31% of the population -when the official figure is 13%). So this may be the only way to win hearts and minds. A great boycott. A one-day strike by immigrants and their children across the UK, coupled with a ban on the use of immigrant-founded businesses by the "indigenous" population.
For a mere 24 hours. Let's do it. And if it doesn't transform public opinion, well, at least I'll have had the day off work.
Mehdi Hasan is the political director of the Huffington Post UK and a contributing writer for the New Statesman, where this column is crossposted