Al Sharpton wants SWIFT justice in the NASCAR noose investigation -- and if they don't produce answers quickly, he's ready to take action.
"If we don't hear something soon, NASCAR can expect a visit from me -- and I won't be coming to drive a car," Sharpton tells TMZ Sports.
Al is really upset ... he's pissed that somebody put a noose in Bubba Wallace's garage at Talladega Superspeedway in Alabama on Sunday -- and he's also pissed cops haven't identified the culprit publicly yet.
Long story short, Sharpton believes the investigation needs to be a top priority with NASCAR and law enforcement because "people need to know they will be held accountable.