Original sentence: The Mexica Movement is the name of a separatist group in the United States that is composed mainly by illegal aliens in the United States who claim partial descent from Native Americans or Indians and use this as an argument to promote seperatism
Edited sentence: It is composed mainly by illegal aliens in the United States who pretend to be decedents of Native Americans or Indians and use this as an argument to promote racism against white people.The Mexica Movement is the name of a separatist group in the United States that have advocated what is generally perceived as brown supremacy