They are young people whose families have historically been on two sides of an important divide: the one between 'residents' and returnees – between those who fled during periods of conflict and those who stayed behind.
Nick Clegg, the leader of the Lib Dems, has been sharper: he talks about soldiers' lives being "thrown away", describing the mission in Afghanistan as "over-ambitious in aim and under-resourced in practice".Yet the most important divide may not be between political parties but between government ministers and military commanders.
Our commitment to borrow for capital investment at a time when the cost of borrowing is zero and the economy is still underperforming was a huge and important dividing line between us and the Conservatives that we seemed to want to obscure.
Age remains an equally important divide.
The 233m-high "mountain", home to Mount Royal Park, is an important physical divide between Westmount, (traditionally the affluent English-speaking neighbourhood) and Outremont or "other side of the mountain" (the traditionally French-speaking area), which now has a significant Hassidic Jewish community.
The important dividing line won't be between those who deploy VoIP and those who don't, or even between early adopters and laggards.
The important dividing line won't be between those who deploy it and those who do not, or even between early adopters and laggards.
But advocates for abortion rights are also proceeding warily, fearful that a weak case could end up in the Supreme Court and upend the legal structure established by Roe v. Wade in 1973 and subsequent decisions, with fetal viability as the all-important dividing line between access to abortion and stringent limits.
But that group is likely to include all the big polluters and, just as important, cross-cuts the divide between the developed and developing countries, the prime source of acrimony at Copenhagen.
"There were several motivations behind launching Whistle Sports, none more important than the growing divide between generations Y and Z and traditional channels of sports media distribution like television," explains Whistle founder and CEO John West.
