The number of times i was told to "go back where you came from" as a kid was not a small number of times. It's straight out racism, just for the record. (yes, yes, this is subtooting you-know-who).
(the answer was always "I was born here!", but the answer was not accepted, and I got into more than a few fights over it... Mostly scuffles, only once did it involve blood and broken glasses...)
(Anyway, just a comment on where we appear to be regressing to again here in the US at this point in time, no apologies or sympathy or whatever needed or requested...)