You wear it around your neck. It has a long cord so you can just grab it with one hand and blow.
And then hordes of liberals trained in hand-to-hand combat will come to your rescue.
I have no problem with people having such things because I’m sure they have saved lives. Every situation is different. Unfortunately, you just made my point: one has to grab the whistle. Gacy chloroformed his victims before they even knew there was a problem (kinda hard to grab and blow a whistle) and a person can tackle you so hard or grab you so fast that before you even have time to react, you are already subdued in some way.
Actually, the best thing would be for people to be trained, ala military style, in the even of being attacked suddenly from behind. But it’s not gonna happen. Oh, which reminds me. There was a guy that women were paying lots of money to have them “attacked” some time when they least suspected it. He ran self-defense classes. I wonder whatever happened to him. Now, THAT’s how you train for something like this.