Hundreds of people marched on Saturday amid massive security measures put in place for the Group of Seven summit nearby, protesting against world leaders who they said ignored the interests of regular people.
Some 3,500 were expected to turn up, but actual turnout appeared to be about half of that.
Salvatore Giordano, a high school professor from the island of Sicily, blamed the low turnout of in part on heavy security. He was stopped by police multiple times and blocked for a half-hour at the highway exit before finally being let through. Police were also stopping buses and searching them, he said.
"They are criminalizing our dissent," Giordano said. "We're pacifists. We're not here to break windows, but to protest against Sicily being turned into a giant aircraft carrier for the world's military powers."