In February 1970, U-M students operating as the Black Action Movement called a strike on classes. They interrupted lectures, banged garbage-can lids in classroom buildings, and hassled fellow students attending class. Their demand to President Robben Fleming: Increase Black enrollment from 3.4 percent to 10 percent.

No, it wasn’t designed as a fortress against student radicals. But it could have been, based on architect Alden Dow’s ‘Michigan Modern’ aesthetic. The administration’s homely headquarters has gained few admirers since opening in 1968; now it’s staring down the wrecking ball.

On Oct.15, 1969, President Robben Fleming advised U-M faculty to forgo attendance. The campus had been given over to the biggest of all 1960s peace protests.