Go in a group...all of you should be in good shape and able to move fast..don’t buy more than you absoutely need, and moreover...can’t carry without slowing you down SIGNIFICANTLY. Watch the mood of the cops and army...if there’s a lot of fingers on triggers...get off the street.
There is no reason for a civilian to go out AT ALL in that situation until an “all clear” is given.
Only conceivable exception would be for a medical emergency that is life-threatening.