what textual clues are included in the boston massacre picture?

Answer:
We can assume from this picture that the colonists were not armed or fighting back, making this a one-sided event. This also makes it an unfair and unjust action from the troops, most likely fueling the anti-British sentiments of the time.
Explanation:
We can tell this from the lack of guns in the colonists hands on the left side of the picture.