You couldn't name your black musicians or actors on one hand that have OD'd from street drugs. What Jimi Hendrix? Some would say he was poisoned. Or Ol Dirty Bastard? He swallowed his stash out of paranoia and the baggy burst in his stomach. It wasn't like he was trying to get high. Michael Jackson had to be given heavy doses of anesthesia to die.
Your white entertainers ODing off of street drugs the list just goes on and on. Two members of Alice In Chains, The lead singer of Blind Melon, Anna Nicole Smith, River Phoenix, The little surfer kid from Point Break, Brad Renfro, Andy Gibb, etc, etc, etc, ....
It isn't a contest of who is the more durable race it is just a state of fact.