This guy has written some interesting books about Russia during the cold war; this article on his life is well worth a read: http://en.wikipedia.org/wiki/Aleksandr_Solzhenitsyn
Some people are unhappy about Solzhenitsyn's last book "200 Years Together", where he makes note that a large percentage of the Soviet secret police were Jewish. Which would make discussion of Soviet death camps awkward in the aftermath of WW2.
Heck, a disproportionate number of Communist Party leadership and socialists/communists in America were Jews. Hard to deny.