First of all, there are too many risks associated with GMOs to justify their release in the market, end of story.
However, since the government decided to allow the marketing of GMOs, I believe it has a responsibility to ensure a minimum of protection and transparency. So why not require labelling? Why not require accountability? That is the minimum that we should expect from our government which is presently promoting GMOs.
If they want to market those, why not ensure a minimum of consumer protection?