Am I over paranoid? I notice my kids' childcare page have this Bangladesh guy liking photos of the kids. I clicked in to see his profile but notice he is not married & have no kids then why he is in the page? I don't know but I feel very uneasy

If a post or picture is public, no one can control who likes it or share it. Sometimes people likes something while scrolling or browsing from a computer browser. The childcare can probably ban the person to ease your mind but I think you are being both paranoid & rasicst.