OK then, when a community’s population grows so big and it needs a new sewage treatment plant, who decides where it gets built, how it gets built, how big it is, who’s gonna build it and how it gets paid for?

So, you have a homeless person living with you?

performed by trade unions, associations of producers, labor councils, federations, committees, etc

That sounds like somebody in authority making something happen, i.e. government

During covid.

https://nypost.com/2020/06/27/san-franciscos-failed-experiment-of-homeless-hotels-is-a-cautionary-tale/