Answer:
Yes, Lexington and Concord plus other early 1775 battles were skirmishes of colonists exerting their rights as British citizens. As noted by several historians.
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Battles like Bunker Hill and Ticonderoga showed the militias could achieve some strategic and tactical victories, total independence gained momentum. Plus King George III started enlarging the British army and navy to crush the rebellion.
Step-by-step explanation:
Bunker Hill: June 17, 1775
Revolutionary battle at Fort Ticonderoga: May 10, 1775
Signing Declaration of Independence: July 4, 1776. Official document spelling out in written form what was already taking hold in mindsets of most colonists.