Flash mob protesting Pakistan's emergency

Pakistani blogger Dr. Awab Alvi successfully used Flash mob strategy in protesting emergency of Pakistan.

Andy Carvin reports:
"If you announce a date a day in advance, the army and police show up" and they "beat the hell out of you," according to Dr. Alvi.

So he concluded it made more sense to organize very brief protests through telephone calls and other communication channels. At an appointed time, the protesters show up, pull out signs and shout slogans demanding an end to the state of emergency. After 10 minutes, they put away their signs and leave before the authorities can interfere with them.
I need to read the book Smart Mobs: The Next Social Revolution by Howard Rheingold.