On mepeace.org, what is and is not an appropriate allusion or reference to a group of people

The owner of this site, Eyal Raviv, obviously under great pressure from some, closed the discussion Bernard Madoff & Wrong Ideas About Judaism with this "I agree with all those who maintain that mepeace is a place for respectful interaction and not for personal attacks" That response is here.

We all say that baseless and/or derogatory and/or incitive generalizations about any person or group of people should not be acceptable on any web site, especially not one devoted to conflict resolution. Some here certainly feel very strongly that some here have made baseless and/or derogatory and/or incitive generalizations about some individuals and some groups of people.

Below please give examples of what you see as baseless and/or derogatory and/or incitive generalizations about about some individuals and some groups of people. There is no need initially to explain why you think or feel that your example is valid! You are free to use any of my missives. I have a thick skin, Very thick. :-) Also please suggest an appropriately assertive but not aggressive response to the perceived attack.

So: We all talk the talk but do we all really walk the walk?

[NOTE: If you think that this discussion starter is NOT clear or open enough, please tell me privately or publicly.]