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Hundreds of protesters have gathered for a second straight day in Sapporo, Japan, not far from the site of this week's summit of the world's richest nations.

Protesters are making a variety of demands, from quicker action on climate change and world hunger to calls for the Group of Eight to be dissolved.

Today's (Sunday's) mostly peaceful demonstration followed larger, protests Saturday. Japanese officials say four people, including a television cameraman, were detained Saturday after a brief clash with police.

Japan has mobilized more than 20-thousand police officers to maintain peace and security at the summit and around the country.

Past G-8 summits have been targeted by violent, anti-globalization activists.

Tens of thousands of protesters showed up at last year's summit in Germany, some throwing Molotov cocktails and clashing with police.