You could make it up, but why? Snip:
Following a brief discussion over the offending popcorn, the shooter whipped out a “legally registered” piece and ensured that never again would Riga’s Forum cinema complex be forced to suffer offensive mastication.
Ed. note: While I wouldn’t necessarily look to The Register for hard news (see their use of the phrase “popping a cap” in a crime piece), they are one of the few – if any – online news sources that bothered to run an update, correctly identifying the shooter as the one who was allegedly eating too loudly.