CSVN tries to jam up the using of Facebook

Vietnam's growing legions of Facebook users fear that the country's communist government might
be blocking the popular social networking Web site.

More Information here.

It's probably that the goevernment follows China to block Facebook, Twitter and Youtube.

But that's normal in a dictatorship, a German CS wrote in a comment:

"Strict laws are necessary to have silence in a country so the development won't be endangered.
The actions of the Vietnamese opposition are less constructively in Vietnam" 

CS explain me how you can express democratic ideas in a dictatorship?
That's  contradictory, first you say strict laws are necessary and then ask why
opposition has no effect.