I consider that imprecise.
Donating blood is voluntary.
Adherence to the law is compulsory. It’s not up to you whether you do it, you’ll be forced to do it.
The deceased’s incredulity at the imminent consequences of her actions are a symptom of the breakdown we’re witnessing in society.
I dunno. People can’t be forced to not drink and drive. They can’t be forced not to shoplift. Short of having a cop watching everyone, all the time, I’d say that adherence to the law is largely voluntary.