NPR's Ari Shapiro speaks with Isaiah McKinnon, Cheryl Dorsey and Vincent Montague, three police officers of different generations, about what changes they envision for the law enforcement.

AILSA CHANG, HOST:

Yesterday we began a conversation with three generations of Black police officers.

He leads the Black Shield Police Association, which supports officers in the Greater Cleveland area.

SHAPIRO: Vincent Montague is president of the Black Shield Police Association, which supports officers serving in the Greater Cleveland area.

Cheryl Dorsey is a retired sergeant in the LA Police Department, and her latest book is "Black And Blue: The Creation Of A Social Advocate."