The title is a bit inaccurate but close enough. Me and my mum were at this small flower shop and saw that some cacti were sprayed on with glitter to the point where you couldn't see any actual green skin and  others had superglued fake flowers. I commented really loudly (unintentionally, I have a really loud voice) to my mum about how tacky and bad for the plants it was. The shop owner must've heard and came up to us telling us how all the plants were real and stuff. She admitted that the cacti were sprayed but kept saying how the flowers were real. I argued really loudly and basically pointed to show  where the superglue was, to which she laughed and then left. 
This is really petty but was I an asshole for  shouting at her or should I have just kept my mouth shut. I mean as a plant lover I was horrified but lots of large stores do this so I guess   maybe I should have let it be?