Answer:
Step-by-step explanation:
a.From the article it does not seem that the source is being biased. Instead, they are simply stating the facts of the violent event that unfolded between both parties involved in the altercation.
b. This letter was mainly meant to bash the Captain and soldiers of the 29th, as they were the ones that fired the first shots. Under the order of Captain Preston, who escalated the altercation drastically by ordering the soldiers to unload their weapons on the inhabitants without need or warning.
c. From the information provided, I would say yes they were helpless. Mainly due to the fact that the soldiers apparently had guns while the citizens did not. Therefore, there was very little that they could have done to defend themselves when the soldiers began firing.