The number of people in the "pop" industry who've died as a result of drugs over the years is phenominal, and don't think it's been a problem only since the '60s. Jazz musicians of the '20s, '30s and '40s died of a myriad of causes in addition to drugs there was alcoholism, syphilis and murder.
One of the modern problems with celebrities and drugs is that while in the '30s, people in your street didn't take diamorphine, they do today. Celebrities can jet off to the Priory or Crossroads in Jamaica, your local scroats however sell their methadone in order to but more heroin. If they don't have enough they just steal your Satnav or mug your grannie.
While members of Lynnyrd Skynnyrd died in a plane crash and Stevie Ray Vaughan was killed in a helicopter accident and I have sympathy for them, it doesn't extend to the likes of Amy Winehouse or Witney Houston.
It's a pity those great talents were destroyed by drugs or alcohol but what's happening in Greece and Syria is far more important and it's the people who live in those places who deserve our sympathy while Witney should be the butt of jokes, so joke away.