Far left here.

Aside from the fact left and right are intentionally super fucked in American politics and do not represent what you make it out to be, even if we talk of true left and right, there's a lot of issues with the way you describe it.

Far left does not advocate for "banning books" or "killing police" - moreover, if you think about it for more than a second, those two are incompatible since banning books would require a solid police force. It's entirely a strawman argument, just as "letting criminals roam free" (please find that in any program of the Left) or "fucking heritage of white males" (please find Marx or someone saying that).

As per helping others at the expense of poor dying Americans - there are two points to note: first, left expects to move money not from "poor Americans", but from actually rich people that won't die on the streets even if we take 90% of their wealth; and second, you consider it central to your idea that Americans are more valuable than anyone else in the world, that helping one American is more right than helping two Ethiopians, for example, which is super fucked if you ask me. People are people, and they all suffer equally. Ignoring greater harm reduction is actively making the world a worse place.