Roger Waters, formerly of Pink Floyd, endorsed the anti-Israel Boycott, Divestment and Sanction (BDS) movement
in 2011.
Since then, his rhetoric has gotten more and more extreme, including
comparing Israelis to Nazis. He uses a giant balloon of a pig at his concerts,
featuring a Jewish Star of David on its side.
Waters has
lashed out at Scarlott Johansson, among others, and actively seeks to lobby
other musicians and artists not to visit Israel.
On March 17, 2014, Waters wrote an "exlusive" column for Salon.com,
Why I must speak out on Israel, Palestine and BDS.

In the Salon.com "exclusive," Waters details the routine justifications, but then pulls out a supposed quote from Mahatma Gandhi to prove that Waters is on the right side of history (emphasis added):
In the furor that exists in the U.S. today about BDS and the right and wrong of a cultural boycott of Israel, a quote from one of my heroes, Mahatma Gandhi, has been on my mind. He prophetically said, “First they ignore you, then they laugh at you, then they fight you, then you win.” The BDS movement is fulfilling its promise and fits Gandhi’s description. Once dismissed by many as a futile strategy that would “never work,” BDS has gained much ground in recent weeks, bringing with it the expected backlash.
.... I think it’s safe to say BDS is in the “then they fight you” stage.
This is a common quote used by the BDS movement. The anti-Israel
Mondoweiss website used it, as has a Northeastern Students for Justice in Palestine
Facebook commenter and a commenter at the anti-Israel
Electronic Intifada.
This student at the recent Northeastern University
anti-Israel protest used it to fire up the crowd:
The only problem is that it's a fake quote.
All available evidence is that Gandhi never said it, as The Christian Science Monitor noted in 2011,
Political misquotes: The 10 most famous things never actually said: