On MTV's Real World, when they show kids wearing the latest styles, they do a post-production a pixel blur over the logos of sports teams and brand names on clothing. Do they do it to avoid copyright infringement or to punish the companies who won't pay advertising space--who knows? But this use of trademarked logos is about as incidental as you can get.

Jerry Anning wrote:

A photo e.g. of a city street where some stores have ads in the window is
generally ok. "Incidental uses" like that are normally not considered
infringing.