How we cite our quotes: All quotations are from West Side Story.
Quote #7
SCHRANK: Oh, I know. It's a free country and I ain't got the right. But I got a badge. What have you got?
At the end of the day, Schrank just dispenses with the pretense and gives them the truth: he has the power to do what he wants to them and he can exercise it just because. This is an admission that brute force is all he needs, not any kind of justifiable reason.
Quote #8
ICE: You wanna live in this lousy world? You play it cool
Hard to argue with his logic. Things are tough all over, and raging about it is only going to turn around and bite you. The only way the Jets can avoid being pounded by their social "betters" is to stay calm, keep it together and take revenge when the cops aren't looking.
Quote #9
MARIA: Stay with me. Don't leave me...hold me...tighter.
TONY: It'll be all right, I know it. We're really together now.
MARIA: But it's not us. It's everything around us.
TONY: Then I'll take you away where nothing can get to us, not anyone or anything.
People in the underclass, or who are struggling financially often express the need to leave wherever they're at: to move out of their neighborhood or otherwise escape. It's hard to do it you don't have any opportunities, which may be why these two are ultimately doomed.