Does the US reflect the definition of a culturally pluralistic society?

I assume you mean "culturally pluralistic society" in the sense that: This is a form of society which is made up of people from different ethnic, religious and cultural backgrounds. A society which embraces minority groups and is tolerant towards them.

Strictly and legally, yes, we have numerous ethnic, religious and cultural groups in the US. We legally respect those groups and have no legal prejudice against us.

Realistically and socially, no, we really don't. America does have numerous ethnic, religious and cultural groups, but we tend to hate people who are different and try not to tolerate them. Often we riot against them, claim they are stealing our jobs, claim they are taking "our" women and that they are going to massively breed out of control until they will use their barbaric ways to tear apart "our" way of life.

We have expressed that feeling towards Irish, Scots, Germans, Poles, Czechs, Slovaks, Greeks, Italians, Jews, Blacks, Chinese, Japanese, Russians, Portuguese, Hmong, Mexicans, Cubans, Puerto Ricans and most recently, Middle Easterners (ie: Muslims) among others.