Thank you for your reply.
It seems to me that the moderators were afraid of the comments.
Commentators came there and wrote that the police would come and disperse this rally. Of course, as a joke.
And another commentator wrote that these were probably protests.
That is, against the background of the fact that the protests are taking place in the USA and in Hong Kong, commentators laughed and wrote funny comments on a group of turtles.
And the moderators, probably, were afraid that the conversation would go in the wrong direction, and just deleted the photo.