Because a signal jammer doesn't work just in a range, these things jam by creating noise in a certain radius, but more often than not this noise acts like a wall and blocks signals outside the actual radius, and if you have the thing near a tower it blocks every connection to the tower. Jammers are illegal in almost every country because of that, imagine the things blocking emergency calls, among other very nasty problems.
I mean saying our politicians are bastards is always right but if he starts calling them pedos he might actually be arrested as thats legitimately illigal without proof.
Isn't the point that Noone was harmed and that you shouldn't get in prison for stuff that harmed nobody. I mean ew its disgusting but not worth jailing someone for it...
Formaldehyd the entire city!