Senior lawyer Matthias Chang has alleged that the government is attempting a "reverse coup d'etat" through National Security Bill 2015 to stay in power and suppress the dissidents.

"I can sum up the purpose of this legislation – reverse coup d'etat. This is the only objective of the legislation," he said.

"The law will be irrelevant. Why? You can shout, argue and say everything in our favour. But all these objections will mean nothing if there is a false flag operation, a huge explosion right in Kuala Lumpur centre, or a man-made assasination.