"Is it morally acceptable to let thousands die, for the better good?"
This is a great topic to start off with.
First I'll take a little trip back to FDR's presidency. Back in the late 30's, many Jews and minorities traveled over to the U.S. to escape certain fate from Hitler and other dictators of the time. FDR deported every one of the refugees back to their homelands.
His reasoning was for a few reasons. The main reasons were because of attempting to stay out of World War 2 with Hitler and the other one was to keep Americas commercial business in tact. Recently coming out of the Great Depression, FDR didn't want to risk the effects the refugees had.
That could be easily debated in two ways. Was he right or wrong? Did he sacrifice their lives for the greater good?
FDR's decision was hard, and to debate this subject is hard, but I'll do my best to debate this in a way I feel is right.
I believe FDR made the right choice. Back in the reigning days of Hitler, his crazed Aryan dreams were pretty much unstoppable. FDR knowing of how insane Hitler was, he was smart and did his best not to piss off Hitler. Even though the united states ultimately went into war, it was because of the bombing of Pearl Harbor. It could have been worse having an insane dictator send a bunch of skin head prisoners and skin head aryans into our country and **** shit up.
Also our economy was a piece of shit. It was finally coming around from the Depression and we were NOT going to risk going back into that hell that affected everyone.
All in all, FDR made the right choice, which also answers the question:
"Is it morally acceptable to let thousands die, for the better good?".
Yes.