ALMATY, Kazakhstan - Some 300 people gathered Sunday in Kazakhstan's largest city to remember the victims of violent clashes between striking oil workers and police that shook the country one year ago.Fifteen people died and more than 100 were wounded when a seven-month strike erupted into deadly riots in the town of Zhanaozen and the village of Shetpe in Kazakhstan's energy-rich Mangistau region last December.The clashes, Kazakhstan's worst post-Soviet unrest, sparked legal attacks on the opposition, including trials of opposition figures and bans on media that covered the protests, and marred the annual celebrations of independence from the Soviet Union, which the central Asian nation declared on December 16, 1991.Leaders of the embattled opposition, activists and relatives of the victims gathered Sunday in central Almaty to lay flowers at an independence monument and hold a minute of silence in memory of those killed."Today Kazakhstan is celebrating (its) independence, but the authorities realise that there's no real holiday," said Bulat Abilov, co-chairman of opposition party Azat.The rally also honoured the memory of victims of anti-Moscow demonstrations by nationalist Kazakh youth that were quashed by the Soviet authorities in 1986."In the future, when the authorities will be replaced, when we will have truly popular and democratic authorities, they will realise that those were truly tragic days," said Abilov."This is our history, it cannot be crossed out, forgotten or changed through a president's single decree."His comments came after Kazakhstan earlier this month celebrated a new national holiday honouring President Nursultan Nazarbayev, the country's first and only leader since the Soviet Union's collapse.Nazarbayev is praised for bringing economic reforms and prosperity to the energy-rich nation, but critics accuse his regime of cracking down on political opponents and committing human rights violations.