Police officers take part in a rally by uniformed staff of the public sector as they protest against planned reforms on their pension schemes, in front of the White Tower of Thessaloniki, northern Greece.

Police officers shout slogans in a rally of uniformed staff of the public sector as they protest against planned reforms on their pension schemes, inThessaloniki, northern Greece.

Police officers shout slogans in a rally of uniformed staff of the public sector as they protest against planned reforms on their pension schemes, inThessaloniki, northern Greece.

Police officers take part in a rally of uniformed staff of the public sector as they protest against planned reforms on their pension schemes, inThessaloniki, northern Greece.