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Guns seized by Washington, D.C. police over the years are stored in the firearms examination section at police headquarters on March 18, 2008. The right of Americans to keep and use guns, an issue that has divided the political landscape for centuries, was taken up by the Supreme Court on March 18, 2008 for the first time in nearly 70 years. Lawyers challenged the US capital's restrictions on gun ownership, which aim to clamp down on murders and street violence, saying those laws infringed on the right of citizens to use weapons at home for self-defense. A decision in this case is not expected for several months.