OK, to clarify my sacrifice parallell: Being a religious custom does not justify certain habits.
Rastafari smoking pot for religiuos reasons most definetely don´t justify non-rastafaris to smoke pot. If anyone feels like smoke pot for any reason, don´t blame the rastafaris.
Sacrificing *may take the expression* of damaging other individuals (wich is not acceptable), but *the meaning* is to please the diety one worships, nothing else. Thankfully sacrifice has developed into less offensive customs, giving money to the church, etc. Still it´s basically the same thing: You give up something of value to You (a slave, some money) to please Your diety (oooh, am I gonna have my ass kicked for this...
).
regards
Mikael S.