This popular image shows this group "tarring and feathering" a tax collector as a protest against the tea tax. who is this group?

The group of people shown ‘tarring and feathering’ a tax collector in the image is that of ‘Sons of Liberty’.

Explanation:

The unjust taxes imposed by the British government without giving any representation to the colonists in the British Council, were attracting opposition from all the classes of residents of the colonies.To oppose these taxes in ways other than peacefully protesting and writing against the British government, a group of approximately 18 people from all the 13 colonies of America came together to form a secret organisation named ‘Sons of Liberty’.The members of this group opposed the taxes imposed by the British government in a completely different way by causing the British government to suffer loss through various means and methods.