Where's Waldo got its start in the late 12th Century. It seems the principle complaint was Waldo's "...contempt of ecclesiastical power".
I stole that term, word for word, because it's such a mouthful. Just thinking about it causes all sorts of mouthy turmoil, so be careful. It's alright in this day and age, but was not so, earlier. Not for many centuries.
Waldo was a wealthy man who came to the conclusion that a love of worldly goods got in the way of the truest love.
Waldo changed his name to Barba. I don't know what that means. He was in hiding. I assume it means he would not have had me killed for not knowing that, not kissing his ring; not agreeing with him.
This attitude was barbarous, an affront to papal power, and declared heretical. It became a movement.
After years of trying to talk them back into the fold Innocent lll finally called for a crusade."Any man, as long as he is a lord, at least, may take their possessions. In nomine patris... ( I nominate Patrick, I think...).
His will be done, (for) the next twenty years the Waldensians, and the Albingensians ( with whom they were conflated) were hunted down and exterminated. Some say 'genocided'. Like the guy who invented the term, (though perhaps he wouldn't have said it as a verb). Let God sort'em out.
Related terms: Languedoc, Occitan, Spanish Marches, Gothia, Albi; Cathar.
Go go forth and research. I nominate you!