Jessica Biel & Mark Hamill Call For Gun Control Laws In The Wake Of Boulder Shooting (PC: Getty Images)

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Actors Jessica Biel and Mark Hamill are leading calls for tighter gun control laws in the wake of the latest U.S. mass shooting in Boulder, Colorado.

A 21-year-old man has been accused of using a semiautomatic rifle to open fire in a local supermarket on Monday (22 March), killing 10 people, including a Boulder police officer.

The tragedy emerged less than a week after eight people were killed by a lone gunman in the Atlanta, Georgia massage parlour massacre, and the latest shooting spree has fired up gun control activists.

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