With the proliferation of very cheap Chinese radios with broadband tx capability, some bored scanner-geek devilish person could fairly easily create some entertainment for themselves & havoc for others by programming some of the radios with federal/state/local public safety repeaters, business repeaters, etc.and disperse the radios into the community.
Unsuspecting people start using the radios, the licensed owners or users of the repeaters have to deal with the situation, and the radio geek can just sit back & listen in amusement at the mess.