Let me add to your confusion.
The link you did post actually goes to an article about the Electoral College.
https://www.washingtontimes.com/news/2019/mar/27/trashing-the-electoral-college-is-about-seizing-po/?fbclid=IwAR3PaXRNjkbifO2KEgFr_ItJcTESBQZeF_gowwIffFcNmGhe2miQgjhdB1I
Not the NZ shooting.
-—more confusion because the link in the original post with 50 some comments goes here-—
https://www.denverpost.com/2019/03/27/guest-commentary-i-gave-up-my-gun-after-the-new-zealand-mosque-shootings-why-are-americans-mad-at-me-for-it/