There are many more white people that black people in this country (hence the term "minority").  So a comparison of pure numbers is meaningless.  The Washington Post had a series of articles on the topic.  Here is one of them:    https://www.washingtonpost.com/news/post-nation/wp/2016/07/11/arent-more-white-people-than-black-people-killed-by-police-yes-but-no/?utm_term=.3afb1a148ccb.
Here is an article from the Denver Post that references the WP analysis and comments on it:  http://www.denverpost.com/2016/07/12/fact-check-more-whites-shot-by-police-in-2015-than-minorities/