When are people ever going to demand a stop? I guess never, and that is exactly why the "we must let cooler heads prevail" cowards and Tone Police are so badly wrong. You have to get in these people's faces and display righteous outrage. It's time for that. Otherwise all your calm, collected, nicely worded letters are ignored and next thing you know this stuff has gone on long enough that the normalcy bias sets in, and it's pretty much too late at that point. That's already largely happened. People are now willing to accept the premise that an elementary school student playing Cops & Robbers on the playground with an imaginary gun is something that warrants severe disciplinary action. They might say "Oh we know he's just a kid and didn't mean any harm" but in the next breath accede to the argument that it cannot be tolerated.
WTF? I remember being in elementary school and taking Lazer Tag gear to school. Yes we played with them on the playground and as far as I know none of us turned into mass murderers.