Brown and Russell on Real Sports tomorrow on HBO

" two icons of the 1960s: gridiron great Jim Brown and basketball immortal Bill Russell. Beyond their hall of fame achievements, both were also outspoken figures in a turbulent period of racism, social activism and profound change. For this expanded segment, Brown and Russell reflect together on the extraordinary events of the era they helped shape, provide candid insights into present-day athletes and reveal the depth and importance of a previously untold friendship they've shared for nearly 50 years."

When Jim Brown talks, people listen.