Although the purpose of photography may differ from cause to cause, it is always preferable displaying reliable images instead of enhance ones.
Sometimes photography can be used as a powerful visual weapon that in the search of making people conscious of different issues, displays dramatic elements and scenes that could be perceived as enhanced.
The following image shows an alarming scene: a sea turtle that got stuck on a plastic six pack rings. The image is really touching but even though it portraits and validates the necessity to stop dumping contaminating objects, it seems more likely to be a trick of digital edition.
The image suggests the animal has been trapped for a while but you can’t see any wear or tear on the plastic as it should be.
The objective may be laudable, but it would be better to show more trustworthy images.