(CNN) -- Fans from across Europe will soon be traveling to Poland to support their teams during Euro 2012, but so too will police officers from each nation to keep an eye on them. When their national teams are playing, visiting police officers will be at Poland's police headquarters in Warsaw, the nerve-center for security operations during the event. Poland has a lot riding on the tournament it is co-hosting with Ukraine, and is no stranger to football violence. Last year's Polish Cup Final between Legia Warsaw and Lech Poznan was a high-profile example of how domestic football in Poland is still blighted by hooliganism, as violent fans clashed with police and water cannons had to be used to control the crowd.
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Polish police have spent years planning to create a peaceful Euro 2012
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The tournament, co-hosted with Ukraine, is Poland's first major international sporting event
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Police from nations competing at the tournament will be in Poland during the matches
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Poland has had outbreaks of hooliganism at domestic football matches
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