The most resonant information that's come my way thus far today in relation to the anniversary of the April 20, 1999 shootings at Columbine High School was contained in an e-mail sent to Westword by Vicki Newell, a public-policy director with the Colorado PTA. It's a list of school shootings since 1999, as compiled by The Brady Campaign to Prevent Gun Violence. The roster gathers 108 incidents since Columbine, synopsized with chilling banality. Many of them received relatively little publicity