Based only on these news reports, which may not be fully informative, it seems to me that the Turin Mayor's approach is a bit heavy handed. It would be OK to initiate a public education campaign, as we do here in the US about healthy diet informormation. But this sounds a bit dictatorial, if not Draconian.
And while one can argue the health problems with meat today, by tomorrow newer studies may reverse all those findings. How many times have we had studies regarding eggs, cows' milk, butter, margarine, and many other food items that were completely revised? In some cases many times, causing people to yo-yo between it's good, it's bad, it's good, it's bad again. Until next month.
Please forgive my skepticism regarding going vegetarian. Humans are classified as omnivores, after all, meaning we eat from many food sources. That's how our dentition evolved. We're not specialized for one single kind of food, the way Kualas or Pandas or something are limited. Part of our species survival strategy has been the ability to live from many food types. I'm not sure that modern cultural considerations should override that natural evolutionary development.