Adrian Florido

Republican presidential candidate Donald Trump repeatedly referred to "criminal aliens" and "illegal aliens" in the immigration plan he released on Sunday. "Alien," and especially "illegal alien," have become such staples in the vocabulary of conservative pundits and politicians that many immigrant rights advocates now reject those terms as derogatory and dehumanizing.

But it wasn't always like that.

The National Association for the Advancement of Colored People is holding its annual convention in Philadelphia this week. For much of its 106-year history, it has been the nation's preeminent voice for civil rights and social justice. Among the topics of discussion this week: recent events in Baltimore and Ferguson.

But NAACP leaders have also addressed claims that their organization is losing relevance, especially for young people who are coming of age in an era of online activism and new protest movements like Black Lives Matter.

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