Full context:   The soap box represents exercising one's right to freedom of speech to influence politics to defend liberty. The ballot box represents exercising one's right to vote to elect a government which defends liberty. The jury box represents using jury nullification to refuse to convict someone being prosecuted for breaking an unjust law that decreases liberty. The cartridge box represents exercising one's right to keep and bear arms to oppose, in armed conflict, a tyrannical government. The four boxes represent increasingly forceful methods of political action.