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news" saturday. we're going to be talking to you throughout the evening. thank you very much for starting us off. >> over the past few years, as the number of mass shootings in america has risen and risen and risen still further, the response to mass shootings has gotten stuck between the gears somehow. our public officials roar and gnash their teeth, but nothing ever catches. policy doesn't change. one of the questions being asked now after this particular spate of mass shootings is whether that stasis will still hold, even now, even as this crisis takes on a frightening new form. [ gunfire ] >> reporter: it happened again this weekend. [ screaming ] >> reporter: and then again. where else in the western world do these shootings happen with such numbing regularity? the answer is nowhere. >> this is also a mental illness problem. these are really people that are very, very seriously mentally ill.