Answer: Sons of Liberty
Explanation: The Sons of Liberty was a secret organization formed precisely because of the Stamp Act. Their aim was to protest the passage of tax laws, i.e. the Stamp Act of 1776. In addition, this organization was formed to defend, otherwise permanently violated human rights, in the Thirteen Colonies by Britain. Members of this organization were particularly angry about passing the laws, including this Stamp Act, without consulting the colonies that were still British nationals at the time.