While board considers next move, post mortem already underway to determine how organization once raising close to $20 million a year in donations had fallen so far

In farewell note Josh Block writes 'polarized political climate in the US' making it difficult for nonpartisan organizations 'to enlist passionate, committed supporters'

Jewish Council for Public Affairs removes its name from masthead of joint newsletter with other groups over concerns it focuses too heavily on anti-Jewish hatred from the left