Is public shaming good parenting?

Not at all, I have a vivid memory of my mum laughing at me when I was really young because I couldn't find her at the mall and followed another woman (thinking it was my mum) while crying badly - until the woman turned and I saw she wasn't my mum. Then I heard my mum and some other people (my relatives probably, couldn't remember the background) laughing at me from afar and ran to her - but she just kept laughing. Was probably 4-5 years old or so. Be it scolding, disciplining or silly things like this, it's still considered public shaming and shouldn't be done (at all, or at least not in public).