Why petitions against Kanye West are pointless

The latest online crusade against the hip-hop star aims to stop him making a David Bowie tribute album. Do the people who signed it really think they’re changing anything?
Right now, someone is sitting at a keyboard starting an online petition. Chances are, it will pop up on your Facebook or Twitter feed any minute, shared by a waggish or misguided friend or colleague. And if it doesn’t feature Donald Trump, David Cameron or the BBC being too leftwing/too rightwing as its focus, it w