Here we go again.

(edited title to revise death toll down per latest reporting; we’ll see if it stays that way)

0027CST update: The shooter has been identified as a 15-year-old girl, whom I won’t name given standard journalistic practice for minors. That’s available in the link, alongside an inexplicable reference to her sometimes using another name, as though this is somehow relevant. The good news is two have been released from hospital, but two remain in critical condition.