I think it is kindness that recently social networks like social media are lacking. Most people feel less connection than real relationship between them because of the feature specific to it. So it is easy to say what you want to remark to someone maybe their feelings being hurt due to it.
So everyone using the internet should consider the possibility of offending others before you post your sentences and photos. We can’t understand who they are and what expression they have on the internet, but they are same to people usually talking face-to-face.