Are we seriously having a debate about whether the system is rigged, rather than to what degree or just how it is rigged?
Here's the perspective from the right, today:
And here it is from the left, last week.
The system is as rigged as the politicians can get away with making it. That shouldn't be controversial. What we should be worried about are these questions:
1) Are there any parts we can have confidence in?
2) What can we do, if anything, to fix the parts we already know are rigged?