Tom Menino got one thing wrong: Saying no to Walmart. The next mayor of Boston needs to get it right. It’s too easy to paint the world’s biggest retailer as the big bad wolf. You’ve read the script: It decimates mom-and-pop businesses, underpays workers, and blights communities. It is so evil that, according to a recent Globe survey, more mayoral candidates would rather see a casino in the city limits than a Walmart. Have they been to a Walmart lately? Last I checked, when you give the cashier $50, you get something in return — diapers, milk, bread, your choice.

I concede that shopping there can be addictive. A carton of Minute Maid lemonade is $1 at Walmart versus $1.75 at Stop & Shop.