Should I say anything?

[Lamona]

My very DSIL is on holiday with DBIL (DHs B) in Thailand. They send us updates via watsap from every holiday (they mean well, its my fault I'm jealous! )
However the latest pics are of them riding elephants. And with baby elephants
So- I know that this is really cruel. It's a horrible thing for them to do but they are really naive and won't have thought the animals are suffering.
Should I say anything in my watsap reply? My thinking is i don't want to be a bitch and make them feel guilty when they've already finished it but also I want them to be aware of the suffering they're contributing to. And to think twice before they book their next excursion

Should I say anything and if so... what?!

No point now it's done, I wouldn't acknowledge it though

I wouldn't via Whatsapp because I don't think there is a way I could say it that didn't sound like sour grapes but I would bring it up in conversation next time I was face to face with them.

If you say nothing you will miss a prime virtue signalling opportunity

Sorry i should have said I work with animal welfare charities. So its not virtue signalling (unless my whole career is)

I've just had a similar thing with my friend posting pictures on FB of her and her family at Sea World in Orlando. I chose to ignore it and didn't like or comment on any of her photos there.

I've been to Thailand. Most of the elephant places are horrible, but some aren't. I spent ages researching different ones, and paid extra to go to a charity where you can ride the elephants but also where you learn about them and what they do. There were a lot of restrictions on this place, set numbers etc.
Don't jump to conclusions or confront them about it. If you are going to raise it, do it in a curious what place did you use tone.
Most Elephant places are abusive, but not all are. At the moment you don't know which sort they went to.