The main reason american colonists considered the stamp act unfair was that it
was an indirect tax that was hard to protest.
related to molasses, which was an everyday item.
only required traders to pay the new tax.
was an example of taxation without representation.

The answer is option 4: was an example of taxation without representation.

The Stamp Act of 1765 was the first direct tax imposed on the American colonists by Britain. It required the colonies to use a specially stamped paper on all paper documents in the colonies, such stamp had to be paid in valid British currency. All paper documents included legal and commercial documents, newspapers, magazines, playing cards, etc.

The main reason American colonists considered the Stamp Act unfair and unconstitutional was that it was an example of taxation without representation, that is to say, it was imposed and made without the colonial legislature's consent. Their famous slogan in protests was "No taxation without representation."

“i think it is very plausible that if there are five votes to end the death penalty, it could be with the people who are on the court right now,” - smith

so basically it is not clearly and consistently imposed