Three the Hard Way (1974)

Starring:

• Jim Brown
• Fred Williamson
• Jim Kelly
• Sheila Frazier
• Jay Robinson 
• Charles McGregor

Storyline
The story involves a white supremacist plot to taint the United States water supply with a toxin that is harmless to whites but lethal to blacks. The only obstacles that stand in the way of this dastardly plan are Jim Brown, Fred Williamson and Jim Kelly, who shoot, kick and karate chop their way to final victory

Link to soundrack review:

 The Impressions/Richard Tufo - Three The Hard Way (1974)