What could go wrong? Both Russia and the United States have developed a “pain ray gun” for dispersing protestors.
The beam has a much shorter wavelength than a microwave oven and very different effects. The waves penetrate only about 1/64 of an inch, and anyone caught in the beam experiences painful but harmless heating of their skin. It causes what developers call a repel effect; nobody can stand it more than a few seconds before having to get out of the beam.
That’s the American system, not yet used. The Russian system is similar, and the Russians seem ready and willing to put it into operation.