Ingratitude: Shechemites
Source: Nav
Judges 9:17, 18
for my father fought for you and risked his life to deliver you from the hand of Midian, / but you have risen up against my father’s house this day and killed his seventy sons on a single stone, and you have made Abimelech, the son of his maidservant, king over the leaders of Shechem because he is your brother—