system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If someone mails me illegal drugs, why can I be arrested?

I asked this question in my law class, and it led to a HUGE arguement about whether or not intent is required to have something be considered a crime.

I live in NY, and if the police see a package addressed to you that contains illegal drugs in it, they CAN arrest you once you receive the package, even if you had no idea who the package is from or what was in it.
gpt
It needs to be proven in a court of law that you knew you were recieving drugs in the mail.  The police have the power to arrest someone on reasonable suspicion a much lower standard then what is needed to find you guilty in court.  Its pretty reasonable that if you got drugs in the mail you knew they were coming since people don't tend to randomly send out drugs to strangers.