What is "antiriot"

Usage examples of "antiriot".

The police, those of them able to function, were out in force, and antiriot robots were cruising the bigger streets, just in case they might be needed to squirt their stifling blankets of foam at suddenly panicked mobs.

Everybody is dead" DEEP UNDER THE Citadel, the antiriot gas of the predark wardens erupted from its storage container as the primary seal was permanently ruptured.