8.SI.1.3

The source I chose contains facts on people who made an impact in black history. You might be able to say there is bias because it states some of the people as “important” and that could be taken as an opinion. Or you could say that whomever wrote the descriptions of the people were being bias because they are favoring one person in black history over another. Every part played was important and it's important to include all people in that role.