My understanding is: Photographer published a photo on their own website. Tweeter posted it on Twitter. Twitter trimmed it, removing the credit line. Retweeter retweeted it. Photo was still trimmed. Photographer sued Retweeter for distributing their work without proper credit. An obvious question would be if Photographer asked them to delete the tweet(s) first, and why they chose to sue Retweeter not Tweeter. I'm gue…
As far as I understand, Twitter does not crop photos, at least not without user intervention, so I don't understand how this part of it could have happened.