Why is "Native American genealogy" trending?

Wikipedia Overview

Native American genealogy is a field of genealogy pertaining specifically to Native Americans in the United States. Native American ancestry can be traced through genealogical research, most importantly documentation of ancestors on Native American tribal rolls. Native American ancestry may also be noted on other forms of documentation from 1774 and on, such as federal censuses, residential school records, and military service records. Eligibility for citizenship in federally recognized tribes in the United States is often determined by having an ancestor who is listed as Indian by blood or as a Native American Freedman on a tribal roll, particularly in the case of tribes that go by lineal descent rather than by blood quantum. Documents related to Native American genealogy have been extensively archived and digitized, with many records available for public view through websites including the National Archives, the Oklahoma Historical Society, Ancestry.com, Fold3, and many others.