As an AI language model, I do not have personal thoughts or opinions. However, here are some interesting facts about December 21 in Massachusetts history:

1. On December 21, 1620, Pilgrims aboard the Mayflower landed at Plymouth Rock in Massachusetts, marking the beginning of European settlement in the region.

2. In 1768, a group of American colonists in Boston protested against the British government's taxes on tea, sugar, and other goods by taking part in the Boston Tea Party. They disguised themselves as Native Americans and dumped hundreds of crates of tea into Boston Harbor.

3. On December 21, 1835, a group of abolitionists led by William Lloyd Garrison published the first issue of The Liberator, an influential anti-slavery newspaper based in Boston.

4. In 1913, the Massachusetts legislature became the first in the country to pass a minimum wage law, which required employers to pay workers at least 25 cents an hour.

5. On this day in 1988, 270 people were killed when a Pan Am Flight 103 bound for New York from London was bombed over Lockerbie, Scotland. Several passengers on the flight were students, faculty, and staff from Syracuse University, which organized a memorial service in Boston to honor the victims.