Censorship began during the U Nu era

Censorship began during the U Nu era and the practice, once established, continued on into the post-1962 era of military rule. Read this:

"In the 1950s, under Prime Minister U Nu, the press in Burma remained largely unrestricted. The Prime Minister himself was always accessible to journalists, who could easily set up an appointment to meet him at his residence. At that time Burma stood out as one of the few countries in Southeast Asia where journalists enjoyed press freedom."

Not accurate. U Nu put some journalists like Ludu U Hla in jail, although he later blamed it on U Thant (Forthcoming in Christopher Goscha (ed.), Culture of the Cold War (Charney, Michael W. (forthcoming) "Ludu Aung Than: Nu's Burma and the Cold War," in Christopher Goscha (ed.) Culture of Cold War, pp. 11-12).