A racialised socio-economic buffer in-between liberal elites and the underclasses was the whole point of the creation of the (so-called) "middle class" through Keynesian economics - that's really what the "New Deal" (in the US) and Apartheid-era economic policies in South Africa was all about. By giving a relatively small (and white) section of the working class a small taste of private property they'd become invested in the colonialist liberal economic order, and it was pretty successful too - it's the reason why boomers are the way they are.

However, now that Keynesian liberalism has inevitably degraded into neoliberalism (which is really an inevitable process) that pretend-social contract is essentially in tatters - so I guess all bets are off.