And you and I have a different notion of both context, and succinctness.  What you're recommended is context beyond the photo  not to draw the reader in  but for other purposes you've mentioned before.  I believe that failing to remove the photographs, you want to include large disclaimers to ensure these photos are interpreted from the context of Gates' innocence. The article does that very well already and I'm not in agreement that we need to duplicate that so verbosely in the captions. I think the porch photo caption does a reasonable job, and the booking photo already does a very good job (perhaps too good for your tastes) of drawing the in the reader. And again, if you examine the Rosa Parks booking photo, it also has a very succinct caption.  I don't see you changing that caption, so I suspect your agenda not in the true spirit of Wikipedia:CAPTIONS#Drawing_the_reader_into_the_article.