You can not get away from legal issues – even when doing street photography. This is my answer. We were pleasantly surprised at the great food available at Au Bon Pain on L Street in Washington DC. A nobody taking pictures will probably never have a problem. But as you get more recognized, it becomes a financial concern. Protect yourself with silly things like this! With smart selection of the alterations you can even make another statement in your image. Get whatever you need from online searches and then save as png files so thay have transparent backgrounds.