Have a lot of cash on you? Cops can steal it without a warrant :)
It is however within the criminal context, with at least the thin pretext if criminal wrongdoing.
This is a far cry from the idea that the government can simply take what they want because they want it.
The idea that politicians can (or should) just make a law dissolving property rights and take whatever water or land they want without compensation is misguided.
Not that I disagree... but this is roughly describes how the US was established.
Hopefully people can agree that it is not a good practice to embrace and repeat.
I don't want to live in a society where people take whatever cant be defended with force. Conversely, I don't think others would want to live in such a world with me.