I find the implications of the technology described in this article very disturbing. The development of an effective non-lethal crowd control device would lead to the effective ending of public political protest. This paragraph from the article sums up my misgivings:
The development of a truly safe and highly effective nonlethal crowd-control system could raise enormous ethical questions about the state's use of coercive force. If a method such as ADS leads to no lasting injury or harm, authorities may find easier justifications for employing them.