What's reasons why the colonist were angry with the new British policies

All it did was make them upset of course mainly because they wanted to be separate from them kinda like they dont wanna be under their rule anymore because all they really did was cause problems with the people in america by taxes, unnecessary killings, laws, and knew if they kept being under brittish rule that they'd never be on their own as a country and everything turn out to be a mess later on more than it already was currently