 KleinSmid was a skilled fencer, and helped found the USC Fencing Club.A passionate supporter of eugenics, which he described as "the science of good birth", and related sterilization programs, KleinSmid co-founded the Human Betterment Association.He argued that "The acceptance is even now upon us, and the application of the principles of Eugenics to organized society is one of the most important duties of the social scientist of the present generation."