Leonardo da Vinci

"The time will come when men such as I will look upon the murder of animals as they now look upon the murder of men." --Leonardo da Vinci

Personally, I think he's right. Just because we have "always" killed animals, doesn't mean it will always seem right to us.

We also used to accept slavery as a normal part of the human condition.

Some other artists who support veganism are:

Synthian Sharp
Tim Gorski
Bryan Adams
Robin Gibb
Morissey