From the article you link to:
"Overall, blacks were killed at three times the rate of whites or other minorities when adjusting by the population of the census tracts where the shootings occurred."
"Overall, blacks were killed at three times the rate of whites or other minorities when adjusting by the population of the census tracts where the shootings occurred."
http://www.politifact.com/punditfact/statements/2015/apr/02/...