The Waldensians were a very early (12th century) attempt at religious reform of the firmly established Roman Catholic theocracy, a movement begun by Peter Valdes, otherwise known as Waldo, a rich merchant of Lyon suddenly converted to the cause of living life in accordance with the precepts of the early church as discerned by his reading of the New Testament. Preceding Jan Hus and John Wycliffe by centuries, his reforms anticipated the Protestant Reformation that finally took hold under Martin Luther some 400 years hence.
Initially widespread, sharp persecution soon confined the members to a secret movement concentrated in the Alps in the border region of France/Italy/Switzerland.
The movement continued to survive and persisted despite frequent persecutions and attacks, eventually allying itself to the early Calvinists of Geneva in the 16th century. That did not save it from the one of the greatest tragedies to befall it, the massacre of the Piedmont Easter of 1655 as commemorated by John Milton's poem that condemns the forces of the tripled-crowned Pope whose historic church corruption was frequently compared to Babylon.
Avenge, O Lord, thy slaughtered saints, whose bones
Lie scattered on the Alpine mountains cold,
Even them who kept thy truth so pure of old,
When all our fathers worshiped stocks and stones;
Forget not: in thy book record their groans
Who were thy sheep and in their ancient fold
Slain by the bloody Piedmontese that rolled
Mother with infant down the rocks. Their moans
The vales redoubled to the hills, and they
To Heaven. Their martyred blood and ashes sow
O'er all th' Italian fields where still doth sway
The triple tyrant; that from these may grow
A hundredfold, who having learnt thy way
Early may fly the Babylonian woe.
So, what knowledge has Milton imparted for us? What parallels, what rhymes as Twain would say, do we derive? The religious divide of the two camps for this massacre, Catholic and Protestant (and later, perhaps even worse, Protestant against Protestant), at that point over 150 years into the Reformation, were even still a lethal driving force considering that what was at stake was nothing less than the salvation or damnation of one's soul unto eternity, the idea that God Himself would turn His countenance upon us or turn forever away.
Move along. We're not likely to see an answer from this quarter.