Protesters are becoming more violent towards police, the force says as eight are sought for allegedly pelting officers with rocks at a rally.

Melbourne's CBD descended into chaos when counter-protesters clashed with police during the anti-immigration March for Australia demonstration on October 19.

Officers were confronted by protesters hurling rocks, bottles, broken glass and rotten fruit, which left two members hospitalised, Victoria Police said.

A female sergeant whose hand was broken and a male senior constable whose leg was gashed have since returned to work.

Releasing the photos of eight protesters who police allege were involved in assaulting police, Detective Inspector Geoff Owen said officers were increasingly bearing the brunt of violence at protests.

"Police support peacefu

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