You should read
@Number_25's posts about campaigning for Remain to get a sense of the people I have in mind (which also have the advantage of having been written by a gentleman, and not an incorrigible smart-ass)
The tide will turn, if it turns, not by dunking on the dubious logic of internet cranks lurking on football forums, but by creating a society where people no longer feel so hopeless and alone.
It is an enormous challenge - and an existential one, really. It has to be confronted, full-on, if we're to have a prayer of preserving what we cherish about a tolerant, cosmopolitan society. The age of assuming that we can solve problems through marginal tweaks to the earned-income tax credit rate are over.
But it is also much more a political challenge than a policy challenge. We have, in living memory, ample examples of how to do it better. New Labour, for example, virtually eliminated homelessness, not through any great policy genius, but through trial and error driven by sheer political will. Conversely, reviving homelessness was also a political choice.
Lost in the kerfuffle over endless variations on Inappropriate-Rain-Attire-gate, there is a policy vision - at the moment, the only one on offer in Britain - for how to rebuild a farer society, where "equality of opportunity" is more than just a sick joke. Those who want to contribute something constructive need to acknowledge the need for change, rather than idly swatting away anything that deviates from a demonstrably failing status quo.