Dissident Republican voices can be read in The Blanket. My link goes to one particular article very critical of Adams/McGuinness but from there one can easily navigate to all other articles.

Where lies the difference between a republican turned British agent and a republican turned Minister of the Crown? Both are employed by, and receive payment from, the British state. Both function to preserve and administer British rule in Ireland. Both are morally and politically repugnant, albeit to varying degrees.

This is not my opinion, BTW. I consider the Adams/McGuinness leadership towards the GFA very good and clever politics. The majority among the Nationalists and Republicans seem to think similarly now. If a strong majority in one part of the world votes for peace and power sharing outsiders (like me) should not tell them they took the wrong way but wish them strength, determination, stamina, and luck.

Wolfgang