It is true that photojournalists are allowed to edit their photos using editing softwares in order to credibly and vividly tell a story. They may or may not add or delete some parts of their photos.
Also, it is true that you do not have to assess much of the situation before photographing.
OK so the movement that Horace Mann supported was the educational reform movement.
Unconstitutional, as it causes the government to become entangled with religion