Psalm 109

Set a wicked man over him, and let an accuser stand at his right hand...For He shall stand at the right hand of the poor, to save him from those who condemn him. vv.6,31

Read chapter 109
This psalm can be a bit confusing as it seems like David is praying cursings on others and blessings on himself.  It is true that David does pray by divine inspiration for and end of his enemies in some of his psalms, but in this psalm it's a little different.  Bible scholar E.W. Bullinger, author of the Companion Bible, noted the differences in who's speaking throughout psalm 109.  In verse 1-5, 16-27,30-31 David is speaking, verses 6-15, 28-29 David's enemies are speaking.  Seems a bit choppy but that's how conversations usually go, not just one person talking all the time.  How too in my prayers do I start praying and then play back in my mind the words said that are causing me frustration.  It's not that I'm praying those words but remembering them and their hurt.  
In verse six the word for accuser is satan.  The wicked's words are saying let satan stand at David's right hand that he may be condemned.  Yet we see in contrast verse thirty-one  that God will stand at the right hand of the poor to save him from the wicked who falsely accuse him.  What unrighteous man can complain if he finds himself governed by one of like character? What can the wicked expect but that their rulers should be like themselves? (Spurgeon)
Who do you have standing at your right hand?