Internet is unfortunately filtered in some countries, and the VPN is an indispensable tool to circumvent this censorship. China is obviously the first example that comes to mind: without VPN, you risk being cut off many services, from Google to Facebook via Twitter.
Net censorship can be much more localized and limited in time: the Algerian government, for example, has filtered the Internet during the last tests of the Bac. Beyond the problems of institutional filtering, a VPN service is simply a way to hide its true IP address and thus use the Internet in a relatively anonymous way, or in any case to prevent an entity from using this address to identify you.

Best VPN service to bypass Internet censorship and surf anonymously
If you are looking for a VPN service to bypass internet censorship and surf anonymously, we suggest you use FlyVPN's service. FlyVPN offers both free trial service and paid VPN service. You can test its service quality before turning to its paid VPN service. FlyVPN owns more than 400 VPN servers in more than 30 countries all over the world. You can check the list of VPN servers from the given link to check whether there is a VPN server you'd like to connect to.