I see many images online with many people on it and sold commercial.
As example i see a shopping mall with more than 30 people from the back and it is sold as commercial image. And like this i found many. Is here really no model release needed? Is it because the people are not with the face towards the camera and and because they are not the main subject?
MR rules are really too strict: When people can be identified /recognized by the combination of clothing, hair or body structure even without the face being visible, the model release will be required. So actually, you don't need MR for silhouettes people but MR is require for red sweat from back!!! Isn't it 100% clear?