Leonard Pitts: Can we still be a country?

Ultimately, it comes down to a set of rules.Meaning norms, practices, guidelines — some written as law, some just respected as customs — to which we all adhere, even when that gives advantage to those with whom we disagree. It’s a covenant pluralistic self-government demands. And it’s one America is in the process of shredding — as seen anew in the Republican Party’s response to the death of Supreme Court Justice Ruth Bader Ginsburg.Understand: that response t