Dwayne Wade: Cousin Shot & Killed Pushing Baby Stroller

Dwyane Wade's cousin, a 32-year-old mother of 4, was killed in Chicago Friday in what the NBA star is calling an "act of senseless gun violence."

Nykea Aldridge was pushing a baby stroller in Chicago's Parkway Gardens neighborhood when two men opened fire on another. Aldridge was caught in the crossfire and struck in the head and arm ... she was pronounced dead at a local hospital.

Wade said Friday night, "My cousin was killed today in Chicago. Another act of senseless gun violence. 4 kids lost their mom for NO REASON. Unreal. #EnoughIsEnough"

You'll remember ... Wade took the ESPYS stage a few months ago with Lebron James, Carmelo Anthony and Chris Paul to spread a message of peace and to end senseless violence.

Cops are questioning two men in connection with Aldridge's death.