Interesting. Let's consider the concept of constitutional protection in general, i.e., not considering the U.S. Constitution in specific. Now, a constitutional protection against, e.g., taxing a rich minority so the masses can have "welfare benefits" is definitely a protection of a minority against the majority. That's hardly leftist. Of course, if constitutional protection of minority rights works is another discussion.
Was that sarcasm? If that's not leftist, what is?