Yes, I too heard the interest by Soros and his foundations regarding election of certain District Attorneys; I didn't understand it , either.
But think about it - What better way to sow chaos ?
You abrogate the "Rule of Law" - with authority, you deviate from the routine and generally accepted application of law.
You make selective prosecutions of your enemies, and minimize the consequence of your allies.
You create social chaos !
Social chaos creates division and unexpected norm expected outcomes ; pretty soon up becomes down, and down becomes up.
That screws everybody up !