How can one be a commoner unless there are royals?
Still, I do think QE2's passing will mark the decline of the monarchy. Although never Empress of India, she did ascend during a period with then Empire was largely intact, just as today it largely is not. There will be another coronation, sure. But it will matter far less than hers, & it might help people in the UK prepare for the notion of it being the last.
Not sure what is meant by the Jamaican reference to "greatest human rights tragedy in human history" however.