On the birthday of Muhammad in 1973, Gaddafi delivered a "Five-Point Address". He announced the suspension of all existing laws and the implementation of Sharia. He said that the country would be purged of the "politically sick". A "people's militia" would "protect the revolution". There would be an administrative revolution, and a cultural revolution. Gaddafi set up an extensive surveillance system. 10 to 20 percent of Libyans worked in surveillance for the Revolutionary committees, which monitored place in government, in factories, and in the education sector. Gaddafi executed dissidents publicly and the executions were often rebroadcast on state television channels. Gaddafi employed his network of diplomats and recruits to assassinate dozens of critical refugees around the world. Amnesty International listed at least 25 assassinations between 1980 and 1987.