Income inequality in America.

CNN has a really good article about it.

Honestly, income inequality is probably the biggest single social issue facing America. Deal with this, and you deal with a lot of issues regarding race and poverty in one fell stroke. You deal with a lot of healthcare-related issues, you deal with a lot of crime-related issues. Basically, reducing income inequality is a silver bullet, and it's one we need to stop ignoring.

The biggest single reason I'm a Democrat is because they're the only major party taking this even remotely seriously. The Republicans need to as well, instead of just providing ideological cover for the rich to continue widening the gap. Because as it stands, we've got crazy Third World levels of inequality.