Oscar Niemeyer – who celebrated his 100th birthday this month – in the 1940s, ’50s and ’60s established himself as one of Modernism’s greatest luminaries. But “some of his most revered buildings — from the BrasilÃa Cathedral to the grand Monumental Axis of the city itself — have been marred by the architect’s own hand.” So “at what point do we — that is, the public that idolizes him, his government and private clients — have an obligation to intervene? Or is posing the question an act of spectacularly bad taste?”