Alvertis Simmons with his grandsons Laurnyz Hawkins and TJ Austin Jr.

(Kareem Maddox/CPR News)

Hundreds of thousands of people are expected to march on the national mall in Washington, D.C. on Oct. 10 to demand "Justice or else!" That's the theme of the 20th anniversary event for the Million Man March. Denver activist Alvertis Simmons was there then, and will return this year. This time around, he says he'll bring his two grandsons, who are eight and 10 years old.

Simmons spoke to Ryan Warner. Click the audio link about to hear the full interview.