Why might people think that it is right to sacrifice one person to save the lives of other people?

Sacrificing one person to save the others will lower the amount of possible casualties but take into consideration "Did the person volunteer for this?" "Does he/she have a family that they're leaving behind?" "Aren't all lives equal and we'd be taking the life of someone's brother/sister/wife/husband/mom/dad/etc."

So honestly, there is no right or wrong answer to this

Opportunity for education  equal before the law  full access and protect in public libraryhave vote rights