Why were colonists angered by britains new colonial tax laws

They weren't directly angry about the taxes, they were more angry that they were being taxed without representation. They thought it was unfair that they were being taxed and all the money was being used in England and not in the colony's, they had no say in how it was spent since they weren't allowed representatives in parliament.

They were mad because King George III didn't give them a choice on taxes, and back in England he didn't give them any voice. It's called 'taxation without representation' and it's not fair. So the colonies complained, including one act called the Boston Tea Party, which was where colonists dressed as Native Americans dumped 342 chests (90,000 pounds) of tea into Boston harbor, to show anger. There were many other things that lead to the Revolutionary War. Hope I helped! :D