Many people agree that some things need to be censored. While others are outraged at the thought of any individual’s work being censored. Many times things that are being viewed or heard by larger masses of people should be censored for the sole fact that you do not know who is in that group of people.
No I don't believe that there is any justifiable benefit for the government in any country to censor internet usage by blocking access. I feel only governments that have something to hide will block content from its citizens. If its citizens knew the truth about what their government was doing it could start an uprising in the country which would in turn lead to the overthrow of the current government.
Internet users should have the freedom to explore all access. Americans take our freedoms for granted while other countries are censoring internet usage as a means of controlling communication and limiting media to their citizens. Blocking internet access is just another tool for governments to control and suppress their people.
The benefit for countries censoring internet access is to keep power over its citizens. This is not justifiable, however. Censoring or prohibition of any kind, only leads people to be misinformed, to mistrust their own government, and to try to circumvent the system using nefarious means. The government should trust its citizens.