Why is it that peaceful RNC protesters are rounded up/arrested by SWAT teams, but the anti-health care protesters (a self described 'angry mob') are looked upon as simply Americans asserting their rights? even when armed at public meetings? : politics

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Why is it that peaceful RNC protesters are rounded up/arrested by SWAT teams, but the anti-health care protesters (a self described 'angry mob') are looked upon as simply Americans asserting their rights? even when armed at public meetings?