The second set of warning signs which Charles Kimball mentions in his book, "When Religion Becomes Evil" are blind obedience, charismatic authority figures, enslavement to doctrines, withdrwal from society, and abdication of indiviual responsibility.
When members of a religion engage in the above practices evil is easy to perpetrate whether it is killing physicians who practice abortion, discriminating against people with same sex sexual orientation, condoning war and torture, and believing and promulgating non scientific ideas such as creationism based on myth and superstition.
The function of such religions is to enhance the power of the clergy by having members abdicate personal power to their jurisdiction. The leader then wields tremendous power in determining the fate of the group as well as the groups relaltionships with others. Jim Jones, David Koresh are severe examples but Robertson, Dobson, Falwell, Hagee and the Popes are milder versions of the same phenomenon.
Unitarian Universalism offers quite different dynamics to its members supporting the free and responsible search for truth and meaning, support for the democratic process, a recognition of the interdependent web of all existence, and a congregational polity which respects the inherent worth and dignity of every person.
James Fowler wrote a seminal book on the Stages Of Faith which outlines the psychology of people attracted to different religions and religious beliefs. More immature personalities are attracted to more fundamentalist religions because they provide an external structure to bind the existential anxiety of less autonomous people. More liberal religions tend to attract the more autonomous, mature personalities because they function more independently with internalized values and feel unduly contrained by external requirements.
One of the main functions of religion in society is to help individuals manage their existential anxiety and less mature individuals require more structured religions with more external control while more mature individuals prefer less structured religions with fewer external requirements.
For this reason Unitarian Universalism will never be a world class religion until human kind matures far beyond its current levels of individual autonomy.