After reading a few of these 1960s Green Lantern stories, I'm beginning to understand Denny O'Neill's 1970s take on the character, when he paired Green Lantern up with Green Arrow, painting the Lantern a stiff law-and-order, tough-on-crime Republican type and Green Arrow as the streetwise bleeding-heart liberal. When I first read those stories as a child, I thought O'Neill was being a little tough on the Lantern, who usually looked cold-hearted and inflexible compared to the more compassionate Green Arrow. But now I see there was some basis in the text for O'Neill's portrayal of the character, and in fact Green Lantern grew a little more liberal over time, his partner's views and their more morally complex adventures rubbing off.
Still, look how ticked off GL looks in this panel. Lousy constitution, protecting criminals..!