rebel at (someone or something)
To defy, resist, or revolt against someone or something. My brother rebelled at our parents a lot while he was in school, something I know he regrets now that he's an adult. A huge number of citizens have begun actively rebelling at the government's proposed legislation reforms.
rebel at someone or something
to resist and defy someone or something. It is natural for teenagers to rebel at their parents. I feel as if I have to rebel at all these rules.