Legal responsibility for intoxication
In the USA an accidental killing is charged as manslaughter. If somebody who is drunk or under the influence of drugs commits manslaughter the charge is often reduced because is considered a mitigating factor. This is unfair, they chose to intoxicate themselves. If they killed your mom, you would be horrified that being off their face got them a lighter sentence.
Police should be trained to spot the signs of intoxication – fnarrrr
And being unruly or disorderly should not be an offence.
I’m adding this link as I don’t think it’s as simple as that. The intent is what matters to the law.