Who said It is time to strike fire with fire and strike terror in the hearts of the pro-slavery people?

Answer 1

John Brown, an Abolitionist said this in response to an attack on Lawrence, Kansas in 1856. A pro-slavery group had come there to arrest the free-soil government (anti-slavery) leaders for what they considered treason. The leaders had already fled, so they burned down buildings and destroyed what they could in connection to the free-soil government. One person was killed during this attack. Brown became outraged by this and led a retaliation against slavery supporters which became known as the Pottawatomie Massacre. These incidents ultimately led the state into civil war.

Answer 2

John Brown, an American abolitionist, made this statement as he believed in using aggressive tactics to fight against pro-slavery advocates and the institution of slavery. Brown led a raid on the federal armory at Harpers Ferry in 1859 in an attempt to start a slave rebellion.