Here is a great article from byFaith about what it means to love our neighbors. In the context of social media I particularly liked the following quote:
“Before clicking “publish” or “send,” consider what you would want said to you (or about you) and how you would want it said. Pray for a loving heart that looks to the interests of others. Then reread the draft and see if it still seems like the right thing to say.”
There are plenty of good tidbits to share with your kids as you talk to them about what it means to love one another. Discernment often begins with thinking through issues before they pop up instead of reacting to what has already happened. Hopefully this article will help.