It's BAD (悪い) for Godzilla to grasp stores with his hand, destroying the merch. (AKU is the onyomi for わるい, meaning bad)
Godzilla grasps a whole store in the palm of his hand.
to grasp - Usually grab is just 持って （もって）. 握る is more specific: grabbing and squeezing! (someone's hand, or a baseball bat, or some free weights).
grasp the meaning of ☆☆☆☆☆
to grasp the meaning of, to figure out.