You didn't research very hard.
From the Washington Post[0]:
> White people make up roughly 62 percent of the U.S. population but only about 49 percent of those who are killed by police officers. African Americans, however, account for 24 percent of those fatally shot and killed by the police despite being just 13 percent of the U.S. population. As The Post noted in a new analysis published last week, that means black Americans are 2.5 times as likely as white Americans to be shot and killed by police officers.
If you look at fatal police shootings so far this year[1], the numbers are the same.
You should provide a link to the Harvard study you mentioned.
Here[2] is one from Yale which someone once touted to me, which supports your claims. But they only used data from a limited number of police departments in Houston, TX. I'm not sure why anyone would look at that and not the national numbers. In the paper, of their own methods they say, "In essence, this is equivalent to analyzing labor market discrimination on a set of firms willing to supply a researcher with their Human Resources data!".
There are many places to find this information online. It is a fact: black people are shot and killed more often by police than white people.
[0] https://www.washingtonpost.com/news/post-nation/wp/2016/07/1...
[1] https://www.washingtonpost.com/graphics/national/police-shoo...
[2] https://law.yale.edu/system/files/area/workshop/leo/leo16_fr...