Promenade by Julian Opie (Calgary, Alberta, Canada)

More information from 2012 article:

In the urban landscape, movement, light and colour are what immediately attract the eye to their presence. Opie’s animated walking figures, rendered with minimal detail in the black line drawing that is a hallmark of the artist’s style, occupy a 24-foot-high, four-sided LED tower on the gritty edge of the downtown and Calgary’s East Village, a 49-acre district with river frontage that is now under development. The sculpture, a $650,000 commission by the Calgary Municipal Land Development Corporation for its Art in the Public Realm program, is called Promenade.

http://canadianart.ca/features/2012/04/26/julian-opie-a-new-calgary-stroll/