Abolitionism

n. principles held by abolitionists; opposition to slavery

Abolitionism is a political movement that seeks to end the practice of slavery and the worldwide slave trade. It began during the period of the Enlightenment and grew to large proportions in Europe and United States during the 19th century, eventually succeeding in some of its goals, although child and adult slavery and forced labour continue to be widespread to this day.
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Noun
1. the doctrine that calls for the abolition of slavery
(hypernym) doctrine, philosophy, philosophical system, school of thought, ism

(n.)
The principles or measures of abolitionists.
  

abolitionism