Something I have observed in american movies

Dude, that was the 90s, where you needed one black secondary in the group. In a 4-5 people group, you usually had 3-4 white people and the mandatory black one, which used to be a secondary character.

Right now the usual template in Hollywood is (1) good characters: a white female, a black male, a black female, a couple of hispanic males/females and an (generally ugly) asian female (2) evil characters: multiple white males.

> Does this reflect the truth in the american society?

I think it depends on the circumstances. I used to work at a place in the IT industry where the workers were about 60% white, 25% Chinese immigrants, 10% immigrants from India, and 5% black. We often socialized together and the mix reflected that. On the other hand, I live in a rural area now where the population is nearly all white, so the people I hang out with are nearly all white.

One thing to keep in mind is that the USA is quite varied from place to place. You'll find a higher proportion of Native Americans in the Dakotas than in New York City, for example.

I'm a bit unsure what your purpose is in asking about this

It's quite normal for people here in The States to get along and be on very warm terms regardless of background, race, gender or anything else, don't believe what you see on the news or social media, we are NOT all racists, homophobes or whatever other mentally damaged labels people seem to freely apply

I'm the whitest looking dude you're likely to meet and half my friends are quite different than me

The original story was probably 4 white people. Its usually forced.

And today that rule is enforce strictly.

I see it all the time. Where do you live to ask such a question?

Sometimes it is 3 black people and a puppy.
2 white people and a latin person.
three latinos and a Chinese grandmother.
Two cats and a dog.
A crocodile and an alligator.
WHere wuz eye?

Does this reflect the truth in the american society?

Yes it does indeed , it all goes back to some law from slavery time that they havent repealed.
A bunch of white people are only allowed to have one black friend
Also blacks are not allowed out with white people unless the white people outnumber them 3 to 1 minimum.
We keep track of this with a license system , and you have to have your license in your wallet when in mixed company.

If all that sounds like a load of horseshit perhaps you should have a look at the sort of questions you are asking.

Not really. Neighborhoods across America have different racial and ethnic compositions from diversified to homogeneous so friendships will depend on that and the willingness of people to socialize with different groups.

It was common for movies and TV shows to have an all white cast which started to change in the 1960s during the Civil rights era. The "token" black character was introduced. Now, movies and TV shows aim for even more diversity with more groups represented since America's demographic is changing.