If you visit the Google home page globally, you will see a little white ribbon on under the search box.

If you hover your mouse over the ribbon, the tool tip will read:

If you click on it, it will try to take you to unwomen.org.

But because of the power of the Google home page, unwomen.org is not able to currently handle all that traffic.

If you want to see it, you can go to the text cached version on Google’s servers or keep trying later.

Google UK said on Google+:

Forum discussion at Google+.