Possibly because they wanted their jobs back. Back in the day, employers hired and underpaid immigrants and therefore firing white people that were paid more. Since immigrants accepted less pay, for the same work done by a white person, white people wanted the immigrants to be fired so they could get their jobs back.
Answer:
Aphorism
Explanation:
Anagram is a word, phrase, or name formed by rearranging the letters of another. I don't think this is it because they is no words that were rearranged.
Aphorism is a pithy observation that contains a general truth. This could be true!
Analogy is a comparison between two things. This is not it because there are not two things being compared.
Allusion is an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference. This is not it because this sentence is explicit meaning it is very straight foward.
Out of all four of those... I would go with Aphorism.
BIG OOOOOOOOOOOOOOOOOOOOOOOOOOOF
