BlackXList
Well-known
Every photographer has to make their own decision in such matters. But, when you are willingly taking on the role of photojournalist or documentarian, along with that comes the acceptance that you will likely have to photograph something you disagree with/find repellent or objectionable...you do so because the duty to inform and let the viewers see, so they can make their own decisions, comes above your personal comfort. In other words, it's not really about you, totally.
That said, many many photographers carry their own burdens in future years from what they've seen. Don McCullin is a famous example - a guy who saw it all and literally took a bullet (only his Nikon F body stopping the slug) for his dedication.
At the risk of sounding mercenary, it's better to have the shot and have the moral argument - one way or the other - at a later time.
On a slightly different note, I came across a story of the vice-versa of this -- a veteran who is using photography to come to terms with his PTSD.
https://petapixel.com/2017/03/28/interview-michael-mccoy-veteran-fights-ptsd-photography/
All the best,
Colin
Very well said.