Elvis Presley performed his last ever show on June 28, 1977.
One of the great cultural icons of the 20th century. His energy, the way he swivelled his hips in a provocative sexually style made him a hugely controversial but ultimately popular figure. Especially during the civil rights movement as his influence ran across the colour lines.
His legacy lives on with thousands of Elvis impersonators round the world.
What we have to remember though is what starts off as controversial can often end up being popular and in the mainstream. Be prepared to take the risk and eventually it could pay off.
What's the most controversial thing that has happened you know that became popular?