 After the 1968 Red Square demonstration against the Soviet invasion into Czechoslovakia, August 1968 saw the arrest of Natalya Gorbanevskaya well known in the West due to her book "Red Square at Noon" describing the demonstration.A few days later, the Serbsky Institute found her non-accountable and made diagnosis of "deep psychopathy—the presence of mild, chronic schizophrenic process cannot be excluded.