Is Brooklyn like a lot of other small communities where the majority of locals are related through marriage or blood to one another or who’s families go back several generations? If so, I know what you’re referring to. It’s not a bad thing and creates a very strong community, just that’s the way it is but it’s a fact outsiders aren’t always immediately accepted. Hispanic or not, it’d be very difficult if not impossible for out-of-town unskilled labourers including farm workers to mingle and become part of the local social circle.
I’m reminded of a conversation about a man running for Mayor in the town my in-laws lived in. My MIL wasn’t supportive, said “But he’s not from here!” My brother-in law replied “But mom, he’s lived here 40 years!”