One of the Determinants of Demand is "a change in consumer tastes/preferences". Advertisers and other advocacy groups try to promote their products in order to influence the buying decisions of consumers.
Here is an example from a Beef Industry lobbying group (from Morning Ag Clips):
- See more at: https://www.morningagclips.com/runners-fuel-up-with-beef/#sthash.Kb94esx8.dpuf
Below I created some slides to show students how this plays out on the Demand side of a Market.
Hope it helps!