The US "justice" system is a travesty; what should I do when called for jury duty?

I was recently summoned to jury duty in my home state of California. I have a serious issue of conscience about this, as it seems to me that there is no justice in our “justice” system. To mention only a few reasons:

- our prisons are overcrowded animal pens, increasingly owned by corporations, whose job it is to make money, not to make humane prisons.

- there is a systemic bias against people of color and the poor, not to mention physically or socially unattractive people.

- there is a shocking lack of critical thinking in our culture, even an anti-intellectual, anti-education attitude in some areas of the country.

- the police—as an institution*—do not serve the people, they serve the police, and their rich masters. They’re allowed by law to do immoral things, and they get away with doing a lot of things they’re not allowed by law to do.

I could go on, but the point is made.

Now, one of the things they ask you during jury selection (at least in California) is whether you can follow the judge’s instructions to consider only the facts presented by the opposing parties—you’re not allowed to consider any kind of extenuating circumstances, like those I mentioned above, or the thousand other failures of the system. I can’t follow those instructions in good conscience.

What should I do / What would you do?

*Dear police officers, if the shoe doesn’t fit, don’t wear it.