“How can the government unilaterally cut [our pensions] without our consent? The government is lousy, unfair and unjust!” said Wu Chih-chang, chairman of the Blue Sky Action Alliance which organised the protest.

Taiwan’s pension schemes vary for different occupations and former public-sector staff typically receive more generous packages than workers from other sectors. 

The government has warned that various pension funds could go bankrupt as early as 2020 if the system is not overhauled. 

About 63 protesters were taken away after they climbed parliament’s gate according to police. Others tried to pull down the gate using ropes and chains. 

Some barricades outside the compound were torn down by protesters, while 32 officers and 11 reporters were injured, police said.

“We strongly condemn the serious violent actions by anti-pension groups and reiterate our determination to investigate [the violence] … we urge the public to use peaceful and rational means to express their opinions and refrain from breaking the law,” Taipei police said.

The Taiwan Media Workers Union also condemned the violence. 

“Many journalists were injured and their equipment was damaged … protesters intentionally used violence and inflicted injuries,” it said.

Some protesters vowed to stay overnight as parliament was expected to review a pension reform bill for military veterans on Thursday. 

Proposed pension cuts for the veterans are part of wider cutbacks in Taiwan that have triggered mass street protests as well as clashes inside parliament among lawmakers. 

A former colonel fell while climbing a wall at a rally by military retired personnel in February and later died in hospital.

Legislators brawled in parliament last week as a draft bill proposed by the cabinet was deliberated for the first time, with the opposition Kuomintang demanding President Tsai Ing-wen apologise to the veterans.  

The backlash over the cuts is a major challenge for Tsai, who has seen her popularity rating fall since her election two years ago. 

She condemned Wednesday’s clashes but vowed not to change course. “The government will not bow to violence and will persist to the very end with the reforms,” said a statement from her office.  

Legislators passed a separate pension reform bill last June that targeted civil servants as the government warned it could no longer afford their preferential deals. 

Tsai admitted in a television interview earlier this month that the reforms have “offended many people” but stood by the plan to make the pension system more sustainable.