Jeremy Corbyn, that's who.
He's been doing it for years.
As he has also been speaking for the Rohingya, for the Dalits, and for so many others besides.
People criticised Dalyell for what was in fact his very specific objection to an aspect of the Falklands War.
But anyone who professes to support the Falkland Islands, yet who does not support the Chagos Islands with equal vigour, ought to be dismissed out of hand as entirely beneath contempt.
Oh, and do look up the precise words of Dalyell's long-serving West Lothian antagonist, Billy Wolfe of the SNP, on the subject of the Falklands War.
Scottish Nationalism's nasty side is very nasty indeed, and Dalyell always saw straight through it.
He and the other Old Etonian Labour MP at the time, Mark Fisher of Stoke Central, both voted against the Iraq War.
Fisher was still in Parliament in 2006 to join only 11 other Labour MPs, including Jeremy Corbyn and John McDonnell, in voting for an inquiry into that war.
The more famous touring speakers of the Left have no difficulty getting into the major public schools.
But the schools run by right-wing Labour Councillors and their spear-carriers are an entirely different matter.