to claim a person was a fugitive, slave catchers also kidnapped free blacks, especially children, and sold them into slavery. Southern politicians often exaggerated the number of escaped slaves and often blamed these escapes on Northerners interfering with Southern property rights. The law deprived people suspected of being slaves of the right to defend themselves in court, making it difficult to prove free status. Some Northern states enacted personal liberty laws that made it illegal for public officials to capture or imprison former slaves. The perception that Northern states ignored the fugitive slave laws and regulations was a major justification offered for secession. Routes Underground Railroad routes went north to free states and Canada, to the Caribbean, into United States western territories, and Indian territories. Some freedom seekers (escaped slaves) travelled South into Mexico for their freedom. North to free states and Canada Structure Despite the thoroughfare's name, the escape network was neither literally underground nor a railroad. (The first literal underground railroad did not exist until 1863.) According to John Rankin, "It was so called because they who took passage on it disappeared from public view as really as if they had gone into the ground. After the fugitive slaves entered a depot on that road no trace of them could be found. They were secretly passed from one depot to another until they arrived at a destination where they were able to remain free." It was known as a railroad, using rail terminology such as stations and conductors, because that was the transportation system in use at the time. The Underground Railroad did not have a headquarters or governing body, nor were there published guides, maps, pamphlets, or even newspaper articles. The Underground Railroad consisted of meeting points, secret routes, transportation, and safe houses, all of them maintained by abolitionist sympathizers and communicated by word of mouth, although there is also a report of a numeric code used to encrypt messages. Participants generally organized in small, independent groups; this helped to maintain secrecy. People escaping enslavement would move north along the route from one way station to the next. "Conductors" on the railroad came from various backgrounds and included free-born blacks, white abolitionists, the formerly enslaved (either escaped or manumitted), and Native Americans. Believing that slavery was "contrary to the ethics of Jesus", Christian congregations and clergy played a role, especially the Religious Society of Friends (Quakers), Congregationalists,