HTTP/2 200 date: Sat, 20 Apr 2019 12:15:28 GMT content-type: text/html; charset=UTF-8 x-loop: 1 last-modified: Sat, 20 Apr 2019 11:31:00 GMT x-ua-compatible: IE=edge link: ; rel=preconnect dns-prefetch; crossorigin link: /art/tncms/user/user.js>; rel=preload; as=script link: ; rel=preload; as=script link: ; rel=preload; as=script link: ; rel=preload; as=script link: ; rel=preload; as=script link: ; rel=preload; as=script x-tncms: 1.43.2; app4; 0.3s; 7.9M x-frame-options: SAMEORIGIN x-content-type-options: nosniff x-xss-protection: 1; mode=block etag: W/d277c7a76c70642142e70ab9edab4068 vary: X-IPCountry, X-Townnews-Now-API-Version, Accept-Encoding age: 3879 cache-control: public, max-age=10 x-vcache: HIT accept-ranges: bytes content-length: 286619 Chicago Tribune: 20 years after Columbine, and we still can’t protect our kids | Column | madison.com Thanks for reading. Subscribe or log in to continue. Continue reading your article with a digital subscription. OFFER ENDS SOONSAVE 50% Cancel anytime✓ Unlimited articles on any device✓ Skip article surveys SUPER SALE: $3 for 3 months of Digital PlusThen $2.49 a week. Cancel anytime.✓ E-Edition PDF of newspaper✓ Unlimited access on any device✓ Skip article surveys Thanks for being a subscriber. Sorry, your subscription does not include this content. Please call 800-362-8333 to upgrade your subscription. You are the owner of this article. Close In this May 1, 1999, photo, demonstrators gather on the Colorado State Capitol grounds in Denver, Colo., to protest against the National Rifle Association's annual meeting, which was being held in the city.  In this May 1, 1999, photo, demonstrators gather on the Colorado State Capitol grounds in Denver, Colo., to protest against the National Rifle Association's annual meeting, which was being held in the city.  ERIC GAY, AP The columbine is a perennial flower often seen growing wild in the Rocky Mountains. But since April 20,

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