It is a lesson in how things linger.
At the same time, Profumo is a lesson of how people can redeem themselves. An excerpt from The New York Times story:
But after his fall, he withdrew permanently from public office, refused to discuss the scandal and, instead, turned to charitable work among the poor in the hardscrabble East End of London. He achieved a degree of rehabilitation in 1975 when he was honored as a Commander, Order of the British Empire.
Unlike more modern politicians, he had refrained from publishing memoirs or even rebutting allegations about his association with Christine Keeler, a prostitute he met at an upscale party.