>>Cant they ban crapping on the streets?<<
I think it is already theoretically illegal.
But that kind of ban does not produce the endorphin rush liberals get when they CONTROL people who are controllable (and probably well to do since vaping is not for the homeless/broke).
This has nothing to do with health and everything to do with POWER.
Public urination and defecation are illegal in many ways. It is a crime to do it. They can throw on top an indecency charge and even a sex-crime charge if done in front of a minor.
More than this though, it is a public health matter. It is illegal to dump waste in the city sewers. It infects the water supply and spreads disease. Boaters and campers will be a world of hurt if caught discharging waste like this.
But they don’t want to spend the money it takes to install and manage/clean public facilities. They have the money to do it, they even have the money allocated towards the correct area e.g. homeless shelters etc. But they won’t set aside a few of the millions they spend on homeless shelters and similar expenditures and redirect it towards public toilets.
And as noted, there is something in the psyche of a leftists that is just inverted. They think they are doing good by tolerating the crime of public defecation and they think they are stopping something bad by controlling/preventing what was a perfectly legal activity between two consenting adults.