Why are the streets full of slogans about the core values ??of socialism?

1. In principle, this is part of the construction of socialist spiritual civilization.

2. Let people have good aspirations, in order to build a society with the same core values, and in order to let people know how to be a good person.

3. They are all implemented by the central government and required by local governments, and are beneficial and harmless positive energy to people.