Two veterans of the anti-Joh era had the fire in their bellies reignited as hundreds protested against the Newman government's perceived anti-bikie legislation.

The crowd, estimated to be about 400-strong, gathered in King George Square on Tuesday evening, prior to marching on State Parliament.

Hundreds of people protested against the government's VLAD laws on Tuesday evening. Credit:Cameron Atfield

Australian Council for Civil Liberties president Terry O'Gorman and long-term Aboriginal activist Sam Watson reflected on their struggles under Sir Joh Bjelke-Petersen's government and warned Queensland was headed back to those days.

Mr O'Gorman took special aim at Queensland Premier Campbell Newman and Attorney-General Jarrod Bleijie.