At first, shakubuku was mainly Japanese to Japanese

...in keeping with the Soka Gakkai's racist position that only Japanese people can truly understand the magic chant:

For the first two or three years, shakubuku and other Soka Gakkai activities were performed mainly by the Japanese. We would look up Japanese-sounding names in the telephone book, take a bus out to the area, find the house, and begin shakubuku. I remember those days very well. †

mmmm...stalky

† - Report by a Japanese wife of the activities of the San Francisco Chapter, in the Seikyo Graphic, April 26, 1966 - from James Allen Dator's 1969 book, "Soka Gakkai: Rise of the Third Civilization", p. 23.