India, April 5 -- The wall leading to the entrance of the primary municipal corporation school in south Delhi's Hauz Khas Village is painted with "Clean India" slogans, and the back of the school's building now has murals of footballer Lionel Messi - as part of a campaign launched by Budweiser India.

Three such murals have come up in the neighbourhood in the past one month. At least two of the new artworks were painted over existing murals created by artists Okuda San Miguel and Mariusz Waras in 2014.

On Saturday, several artists - under the banner of St+art India Foundation, which works to promote street art, shared pictures of the murals on social media, raising concerns over "advertising in the name of street art" and promoting an al...