Angel Colors: The Blue Light Ray, Led by Archangel Michael
"The Blue Ray Represents Power, Protection, Faith, Courage, and Strength"
https://www.thoughtco.com/angel-colo...ght-ray-123860
The Throat Chakra
"The function of the Throat chakra is driven by the principle of expression and communication."
http://www.chakras.info/throat-chakra/
in time, you may come to believe that there are no "bad people".
from that 1st link:
"God sends angels on [missions] to help people" (with harm to no one).
it could be that your dream was speaking of bringing god's loving energy
into the earthly realm, and using it to 'crack the ground' [break through
the "negative" energies], delivering freedom. wielding the blue light,
and communicating effectively appear to be tasks you're interested in.