Using an image from a google search (whether it has a copyright symbol) for commercial perposes is very shakey ground.

The person who took the photo has rights as does the person who owns it (if it was sold to a media outlet etc) and as does the person who the photo is of.

Just because an image is in the public domain does not make it public property and you need to get permission from the rights owner or personality if you want to use it for financial gain.

Even if you were to personally take a photo of a celebrity, you would not automatically own the commercial right to print it on bags, posters etc as the celebrity owns their image even once they are dead.

You should probably do some research on "personal rights" "publicity rights" and "natural rights".

Personally I would also seek some legal advice as I believe that you could be sued for a lot of money, if not prosecuted. It is not a good enough defence to say "well, others are doing it too"