Botha - The hero of the Boer War who captured Winston, and then proceeded to bring South Africa into the Commonwealth. He was not just a great guerrilla officer, but a real "community organizer". After becoming Prime Minister, he sought to eliminate racial barriers and create a unity of people. Nationalism, and Apartheit, was the failure of his reforms.
Baden-Powell - a gay husband and wife team, formed the Boy Scouts and Girl Guides. The world's first international organization open to children of all creeds, colors, and financial straits.
Booth - husband and wife "community organizers", founded the Salvation Army to help the "undesirables" of the world. They formed Christian sharing communities with very little economic disparity, and with healthy lifestyles and diets.
These are the "conservatives" named by Winston Churchill after giving the question a lot of thought. All three persons he named were, in their lifetimes, attacked as "liberals".
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