There is, predictably, a mini-backlash against the Obama campaign’s focus on Bain. Some of it is coming from the Very Serious People, who think that we should be discussing their usual preoccupations. But some of it is coming from progressives, some of whom are apparently uncomfortable with the notion of going after Romney the man and wish that the White House would focus solely on Romney’s policy proposals.

This is remarkably naive. I agree that the awfulness of Romney’s policy proposals is the main argument against his candidacy. But the Bain focus isn’t a diversion from that issue, it’s complementary. Given the realities of politics — and of the news media, as I’ll explain in a minute — any critique of Romney’s policies has to make use of his biography.

The first point is that voters are not policy wonks. They do not go to the Tax Policy Center website to check out distribution tables. And if a politician cites those distribution tables in his speeches, well, politicians say all kinds of things.

Nor, alas, can we rely on the news media to get the essentials of the policy debate across to the public — and not just because so many people get their news in quick snatches via TV. The sad truth is that the cult of balance still rules. If a Republican candidate announced a plan that in effect sells children into indentured servitude, the news reports would be that “Democrats say” that the plan sells children into indentured servitude, with each quote to that effect matched by a quote from a Republican saying the opposite.

Remember, Republicans have already voted for a plan that would convert Medicare into a system of inadequate vouchers bearing no resemblance to the program we currently have — yet Factcheck Politifact declared Democrats’ claim that this ends Medicare as we know it “lie of the year”.

So running on the real policy issues by itself isn’t going to work. By all means, run on the real issues — but do so by creating a narrative, a pattern that registers with the public.

And Romney’s biography offers a golden opportunity to do just that. His policy proposals amount to a radical redistribution of income away from the middle class to the very rich; he’s also being highly dishonest about budgets and just about everything else. How to make those true facts credible? By associating them with his business career, which involved a lot of profiting by laying off workers and/or taking away their benefits; his personal finances, which involved so much tax avoidance that he’s afraid to let us see his returns before 2010; his shiftiness over when exactly he left Bain.

You could criticize the biographical focus if it were being used to convey a false impression of where Romney stands, but that’s not what’s going on here; instead, it’s being used to get the truth about the candidate past the noise and the media barrier. The truth is that the Obama campaign would be doing the American people a disservice if it didn’t make the most of Bain.