independent production fund, with support from the partridge foundation, a john and polly guth charitable fund. the clements foundation. park foundation, dedicated to heightening public awareness of critical issues. the herb alpert foundation, supporting organizations whose mission is to promote compassion and creativity in our society. the bernard and audre rapoport foundation. the john d. and catherine t. macarthur foundation, committed to building a more just, verdant, and peaceful world. more information at macfound.org." anne gumowitz. the betsy and jesse fink foundation. the hkh foundation. barbara g. fleischman. and by our sole corporate sponsor, mutual of america, designing customized individual and group retirement products. that's why we're your retirement company. >> welcome. this week in the streets of boston, we were reminded once again that civilization is too often a thin veneer stretched across the passions of the human heart, with those who would commit acts of violence trying to disrupt and even destroy the fragile commons we call society. fortunately, there are people w