What does the fact that Italians,Jews,and Irish people were considered "blacks" by many people a hundred years ago suggest?

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The fact that people of Italian, Jewish, and Irish descent were considered "blacks" a hundred years ago suggests that distinctions based on race are arbitrary, socially constructed, and transitory. This highlights the idea that race is a social construct rather than a biological fact, and it is subject to historical and cultural influences. It also suggests that people in the past used race as a way to differentiate and exclude certain groups based on arbitrary characteristics, rather than any real biological differences.

What Does the Fact That Italians,Jews,and Irish People Were Considered