Two case studies of how only time could tell about implementing public <strike>actions & codes</strike> policy:
Government against the people from Copenhagen, who had firstly reacted towards the idea of turning traffic filled lanes into pedestrian streets by saying: "We are not Italians. Those Mediterraneans like walking the streets and using plazas. We are Danish, with this weather, we enjoy A/C and driving cars". The municipality did not listen to the public, and in 1964 it went on implementing pedestrian streets and investing in the embellishment & reprogramming of collective space. That 50+ years later, the city neighborhood has become filthy rich gained value [to the point where people can no longer afford to live in it]. It's population has the highest level of health in the world because culture changed and people walk or use a bicycle [which means the government has to spend less money in their health-care-system]. And it is known as one of the premium tourism spots in the world.
Government against the people from Spain. When developers were forced to include social housing [at first unofficially], they complained that people would not like to live next to the poor. And around the same time when people were given the tool to get together, re-divide land and selling it with higher potential as long as they took care of urbanization costs, they complained too. Now, 40+ years after the fact, people have no issue getting organized to sell their land; and have no problem with the idea of sharing their building with the "poor".
Culture takes time, but if you dare think in the long term, you WILL make a difference.