in this case, more so than religious belief, it would be moral to take the drugs from someone abusing it.
so, you're going to see your brother/sister abuse crack in front ofyou and do nothing?

and thats not a catholic belief, it goes for everything christianity is based on.
jesus died on the cross to forgive our sins, free us from debts, and to forgive the sins that we will make.
then why do you think jesus died on the cross?