I believe one of the most difficult concepts to grab is that there is good and evil in every group whether it be political, business, ethnic, religious or charity.
There will be people there for the right reasons and those for the wrong reasons. Individuals who will look to climb the ladder upon the necks of those that “work with them” and those that rise above others for the good works they do. In between will be the cynical types who will follow whichever road appears to be stronger at the time. The challenge is to be willing to root out the evil even publicly if need be to make sure the cream really rises to the top and your group can meet the goals it needs to be successful.