Google like many other communications companies, regularly receive requests from government agencies around the world to remove content, very often video content.
Unlike most other companies, Google seems to be more serious about protecting their users against ever intrusive government measures so they created a tool, or rather a custom Google Mapplet where they tag each country and the number of take down requests received from its government agencies as well as the percent of those requests Google has complied with.
Its interesting that China is not included. Is this due to Google moving its Chinese operations over to Hong Kong?
What’s even more interesting is the complience rate as noted by user/JoeFelice on reddit.com. Its important to note that Google has to comply with the law of each country it operates in, so Canada’s ratings may have more to do with loose legislation than actual intent to censor content on the internet.