Nowadays with tecnology we can find photos in diferent social media pages like Inatagram, Facebook, among others, different places constanlty sare pictures, without permission of the owners, I guess they do it for marketing purposes, but I don´t agree with this practice. Because sometimes we are scrolling in our app and suddenly we apear in some restaurant or place with friends or family, and it seems to be public so everyone can access to that information.
I guess we have to be carefully when the ask us for a picture to be display in their page.