Complex sentence: The National Urban League is an organizational member of the Coalition to Stop Gun Violence, which advocates gun control, and in 1989, was the beneficiary of all proceeds from the Stop the Violence Movement and their hip hop single, "Self Destruction".
Split into simpler sentences: The National Urban League is an organizational member of the Coalition to Stop Gun Violence, which advocates gun control. In 1989, it was the beneficiary of all proceeds from the Stop the Violence Movement and their hip hop single, "Self Destruction".