The Civil Human Rights Front has blasted the police for refusing to grant permission for a rally and march on Saturday on Hong Kong Island, rejecting the suggestion that participants could turn violent.

The group said the police cited previous protests that ended in clashes as part of their reasons for prohibiting the protest, with officers also noting that illegal assemblies followed a front rally on Aug 18 in Causeway Bay.

Jacky Hung from the group said they were going to appeal against the ban.

“The Civil Human Rights Front tried its best to protect protesters in the past few months … we are trying our best to uphold peaceful demonstrations. But the police have put all their excuses and faults on the Civil Human Rights Front, which is very unfair to us,” Hung said.

Despite planning an appeal, the front’s convenor, Jimmy Sham, said they were not optimistic they would be successful.

The group was behind peaceful extradition bill marches and rallies over the past few months which attracted as many as two million people.

The march planned for Saturday, from Central to the liaison office, was scheduled to mark the fifth anniversary of Beijing’s announcement of a conservative political reform framework that stipulated there must be screening for Chief Executive elections by universal suffrage. The reform package was eventually rejected by Legco.

The Beijing move had led to the 2014 Occupy movement and protests that saw pro-democracy campaigners occupying key roads in Hong Kong for 79 days.