1)
Is this connected to the previous verse?
1.
Malbim: Yes. The primary glory of Gevurah is to do Mishpat and save the oppressed. These Giborim vindicate the Rasha due to bribery!
2)
Why are they called "Matzdikei Rasha"?
1.
Radak: The judges vindicate the Rasha in his judgment.
2.
Malbim: His evil is revealed. They do not seek at all a reason to vindicate him. It is clear that it is due to bribery.
3)
What is "Tzidkas Tzadikim"?
1.
Rashi: It was proper to vindicate them. They veer from it, and obligate him in judgment and steal from him.
4)
Why does it say "Tzadikim" (plural) and "Mimenu" (singular)?
1.
Radak: They steal from every Tzadik who comes for Mishpat.