Many people are under the false impression that any images that they find in Google images are in the public domain
Most images on the web and indexed by Google are protected by copyright
In the screen shot below,you will note the statement by Google that “Images may be subject to Copyright”
The gear wheel in the upper right gives you access to the advance search feature where you filter the results for use terms
Filtering this query for images that you are free to share or use returns no images!