To Trump, his supporters and the current GOP there is no such thing as "good ones". Unfortunately some still believe otherwise, even after this.
I don't think "best of us" was meant to reference the immigrant population, so much as DACA represents what used to be something America prided itself on--We're a nation ultimately composed largely of immigrants (which has its own shameful backstory), and we welcome people who want to come here for a better life. It's become complicated and ugly and American patriotism and exceptionalism goes too far, but at least when I was growing up they literally taught kids in school that being the Great Melting Pot was part of what made America "Great".
So DACA is "the best of us", because it incorporates what was supposed to be a strength of America itself. Yes, we have laws around immigration. Yes, we have to have some kind of system for handling people willfully violating those laws. But DACA was a step towards ensuring that we didn't penalize the most vulnerable for something they didn't control. We don't punish kids who grew up here want to belong the supposedly prosperous nation they consider home. It doesn't matter how they got here, this is their home and we shouldn't be kicking them out.
Crying Eagle.jpg and America, Fuck Yeah! have always been rightfully mocked, but DACA was an extension of something kids thirty years ago were literally taught was what made America great. The focus will rightly remain on the actual human cost here, but the actual idea behind ending the program runs counter to what we used to pride ourselves on.