Where in Martin Luther King Jr.'s speech "I have a dream" is the parallelism?

An example of parallelism in rhetoric in the speech "I have a dream": "I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.

Explanation:

In language structure, parallelism, otherwise called equal structure or equal development, is an equalization inside at least one sentences of comparable expressions or statements that have the equivalent syntactic structure. The use of parallelism influences intelligibility and may make writings simpler to process.

It makes a huge impact on the passage or the part of the literature where ever it is used. The most important impact is that it creates simplicity and reduces the complexity in the text which makes it easier for the reader to grab the idea of the text.