On Tuesday, I will be visiting Pittsburgh to perform my Pink Floyd hit "The Wall" at Consol Energy Center. By coincidence, the General Assembly of the Presbyterian Church (USA) has gathered this week in Pittsburgh.

One issue the Presbyterians will be debating is whether to take action in support of Palestinians living under Israeli occupation in the West Bank, under siege in Gaza and as second-class citizens in Israel under the rule of the apartheid government there.

I write in support of those Presbyterians who would like their church to divest its holdings in three U.S.