Why use the global keyword in C#?

Question

I would like to understand why you might want to use the global:: prefix. In the following code, ReSharper is identifying it as redundant, and able to be remove

Answer 1

"The global contextual keyword, when it comes before the :: operator, refers to the global namespace, which is the default namespace for any C# program and is otherwise unnamed."

Source: https://msdn.microsoft.com/en-us/library/cc713620.aspx