We need a team of sign language translators, a professional choreographer, and a 5 gallon bucket of glow sticks.
Line the translators behind her, give them glow sticks, using the choreographer you them train each translator to make the correct hand signal at the right moment. Done right and the translators would be making a wave of sign language fast enough to keep up with the song.
This is stupid, there will always be crime. These things should be happening simply because that’s actually TAKING CARE OF YOU’RE CITIZENS.