Police used rubber bullets (mostly used only in developing countries not in Europe), tear gas, and water cannons with colored liquid.
Police fouls could be observed, like mask on policemen making their identification impossible, and usage of collapsible lead stick (viper). These are usually allowed only in special, anti-terrorist forces.
Inhumanity and endangering of lives exhibited by firing tear gas above knee and gum bullets to heads, beating medical doctors helping injured or traumatic people all to sticks, kicking of swooned persons...
According to European security experts the behavior of riots was not dangarous to justify the extremely brutal response of police. Moreover, nothing justifies attacking celebrators of the 50' anniversary on street (including mothers with small children and old people) with swords and other weapons.