 Gun advocates lean on the Colonial period, offering a stirring, profoundly radical story about how the aggrieved American colonists created "extralegal" militias and fought hard against the British authorities' efforts to suppress those armed civilians. Given that these militias were "critical" to the success of the Revolution, the original plaintiffs in the case say it's essential that Americans today have the right to take up arms once more should their government fall into tyrannical ways.