Summary: David uses legal language to let God hear his case. He knows that wicked people are wicked and that he has been invited into God's presence, and asks that the wicked meet their demise while he and other faithful stay with God.
Response: Did I mention before that I'm not a fan of us vs them in Scripture? Without trying to push too far, this is what brought us so much terrible history in the church, from the Inquisition to needing the civil rights movement. I understand that David is fighting true pagans, the eat-your-children kind, but I'm not; am I supposed to think this about those around me? I guess I'm not a fan of this kind of psalm. Lord, reveal Your truth in spite of what I think I want to hear.