McVeigh parked his truck in front of the wrong building.
There was a time when some of the more radical groups tried to blow up a number of UW-Madison campus buildings, but the effort was abortive and had no real impact beyond Sterling Hall. I recall this because I was THERE in 1970 when this early revolt was just getting going. The faculty quickly caved in to the threats and there was relative calm on the rest of the campus. The student collective had gained veto control.
Incidentally, the explosive of choice was ammonium nitrate/fuel oil, YEARS before it was used by McVeigh.