This last Thursday, August the 21st, was the 40th anniversary of the Soviet invasion of Czechoslovakia. Jim Johnson over at (Notes On) Politics, Theory and Photography had a couple good posts on how Magnum, Aperture and some of the general media have addressed the anniversary. Most interesting is perhaps Sean O'Hagan's profile on Josef Koudelka, recently published on the Guardian UK's website.
The article goes on to shed much light on some of the lesser-known chapters in the legendary Czech photographer's personal and professional history. It is well worth the read.