This is an amazing sermon delivered two days ago by an unidentified Catholic priest. He discourses clearly and forcefully on a range of issues, especially the serious obligation we who are parents have before God to safeguard our children from moral dangers. Along the way, he makes a few startling comments about how the evil one tries to subvert children and, in particular, he advises parents to be on guard against letting a certain "strange man" speak directly to their children. Give this a listen. It will be 18 minutes and 44 seconds of your life well spent.
P.S. In case you're wondering, the lion picture pertains to 1 Peter 5:8-9. When you hear this sermon, you'll understand why I added that graphic.