We get all sorts of government trade journals delivered here. I found this while leafing through the latest issue of GSN: Government Security News (http://www.gsnmagazine.com/).The video below advises:
The "Dazer Laser" is an "ocular distraction device" that emits a non-damaging [Oh yeah-RW] laser pattern that temporarily blinds a person. Some of them will work up to 1.5 miles! The videos show quite clearly how they do their dirty work... I can imagine it won't be long before SWAT teams are mounting these to their RV's for crowd and riot control.
In the event of crowd control...simply use the Dazer Lazer like a paint brush and daze the crowd across their faces.