"I am writing to ask you to do the one thing that will do the most good for the planet and the majority of its inhabitants: not serve meat or dairy products at Live Earth 2015," he wrote.
"I don't mean offering a vegan option - I mean not serving animal products at all. Otherwise, the event will make no sense - it'll be 'greenwashing'."
He argues that because raising animals for food is a leading cause of climate change, 'serving meat and dairy products at an event to combat climate change is like selling pistols at a gun-control rally'.
He boasts in the letter that he makes every venue he performs at provide a 100 percent meat-free menu - including Madison Square Garden.
'If you choose to serve animal flesh at Live Earth, you'll be making a mockery of the very concept of the event, in which case it should be renamed "Dead Earth: We Contributed!",' he concluded.
The venue is yet to confirm this is the case. The New York Post quoted the owner of a burger bar inside MSG who said it was the first he'd heard about it - but added he had no problems with it
"This is the first time I'm hearing about it," said Daily Burger owner Drew Nieporent. "But I love my man Morrissey. He's a wonderful artist, so I wouldn't mind. He can do whatever he wants."
Instead of providing a vegan menu on the night, Nieporent added he was simply going to close shop for the night and "just go and enjoy the music'".
- Daily Mail