What issue enabled abolitionists to expand the appeal of their arguments to those who may not have cared much about slavery?

Question

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The abolitionist movement utilized the issue of free speech to broaden its appeal. They argued that the suppression of anti-slavery speech by pro-slavery forces was a violation of their rights to free speech, thus engaging individuals who might not have been moved by the moral arguments against slavery alone. This approach allowed them to connect with a wider audience who valued the principle of free speech, even if they were indifferent to the issue of slavery itself.

What Issue Enabled Abolitionists to Expand the Appeal of Their