This does not mean excluding communists, since I expect there are some who would be valuable coalition partners. But it does mean excluding the ones who end up excluding everyone else, given half a chance.
mbs
Carl, I dont know what your background is, but I totally disagree with this. The problem in a lot of cases (and this dates back to my first political involvements as a student during the anti-apartheid movement here in the US) these vanguardist groups will keep the Principles of Unity at a level that allows them to stay in charge of the movement. Whenever anybody raises objections, the whining vanguard butt-whipes yell, "Sectarian"..