It's not something hard to understand. In so many countries information been censored in favor of it;s government it's typical.and mostly in Islamic countries people use internet via filters to get through. Any type of information and result that would violent the Islamic rules been censored by the gov.
Of course it's censored in every country.
CENSOR: Suppressing parts deemed objectionable on moral, political, military, or other grounds.
Because the USA views things like death threats and child porn "objectionable" on legal grounds (they are crimes) ... The government will censor them off the internet when it can.
Yes it's censored! You can only view what "they" (whoever that may be) want you to view....therefore, you only gain knowledge of what "they" want you to know!
Yes it is. ( although easily hackable)