Many Governments usually block services like YouTube for a short period of time, many users have to go through unwanted censorship which can be avoided. A recent example of this censorship is the blocking of YouTube access in China.
However there are several alternatives to unblock or access the blocked websites by bypassing the ban, one of them includes using proxy servers to access blocked sites.
There are several other solutions to unblock websites, one of them is FreedomStick [via] which includes the Tor browser, which we had told you about recently as a project that allows users to browse internet anonymously.
We are very sure that there may be many other alternatives to access blocked websites, we would like to hear about them from you, tell us which services or tools you use to access blocked websites, it would definitely help the rest of the readers.